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A maintained list of 1,854 legitimate backlink sites: directories, profile creation sites, guest posting sites, launch platforms, registries and marketplaces. 1,532 are free or have a free tier, 44 usually give a dofollow link, and 772 have an estimated DA of 70 or more. Every row shows authority, link type, cost and effort, and links straight to the submit page.
The table is wider than the screen — swipe it sideways for cost, effort and the preparation notes.
| # | Impact (sorted) | Site — sort by this | Est. DA — sort by this | Link | Domain | Type | Cost | Effort — sort by this | Priority | Status | What to prepare | Rules / caveat | Checked | Actions |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 201 | 43 | Bump.sh | 50 | Sometimes dofollow | bump.sh | Publishing platforms | Free + paid tier | Moderate | Later | Needs checking | Upload your OpenAPI or AsyncAPI spec to host public API docs with a changelog and link to your site. | Public docs are for real APIs; free use has limits. | Added 2026-11-01 | Open Bump.sh submit page (new tab)Bump.sh details |
| 202 | 43 | Carrd | 80 | Sometimes dofollow | carrd.co | Profiles and entities | Free + paid tier | Moderate | Later | Not submitted | Make mini landing page for your tool categories linking home/tools. | Avoid doorway spam; make useful. | 2026-07-30 | Open Carrd submit page (new tab)Carrd details |
| 203 | 43 | ChamberofCommerce.com | 75 | Sometimes dofollow | chamberofcommerce.com | Business directories | Free + paid tier | Moderate | Later | Verified live | Add or claim your tool only if it has a genuine US business presence, then verify the website and business details. | US-focused local directory; eligibility, verification, and public-link treatment should be confirmed before submission. | https://www.chamberofcommerce.com/faq | Open ChamberofCommerce.com submit page (new tab)ChamberofCommerce.com details |
| 204 | 43 | CSO Online | 85 | Sometimes dofollow | csoonline.com | Guest posting sites | Free | Involved | Later | Needs checking | If you have real security leadership experience, apply to the expert contributor network and propose recurring topics. | Contributors must be independent experts; product pitches and marketing links are not allowed. | Added 2026-11-01 | Open CSO Online submit page (new tab)CSO Online details |
| 205 | 43 | Dataversity | 65 | Sometimes dofollow | dataversity.net | Guest posting sites | Free | Involved | Later | Needs checking | Find the contributor guidelines and pitch an educational article on data management, governance or analytics. | Articles must be vendor-neutral and original; links are limited to supporting references and the author bio. | Added 2026-11-01 | Open Dataversity submit page (new tab)Dataversity details |
| 206 | 43 | Datawrapper | 75 | Sometimes dofollow | datawrapper.de | Publishing platforms | Free + paid tier | Moderate | Later | Needs checking | Publish a chart from your own data and add your site as the source link. | Charts should present real data; abuse of the free tier is not allowed. | Added 2026-11-01 | Open Datawrapper submit page (new tab)Datawrapper details |
| 207 | 43 | DesignRush | 75 | Sometimes dofollow | designrush.com | Software directories | Free + paid tier | Moderate | Later | Needs checking | Pitch/list company/tool if category fits. | More agency-oriented; verify fit. | 2026-07-30 | Open DesignRush submit page (new tab)DesignRush details |
| 208 | 43 | EdSurge | 80 | Sometimes dofollow | edsurge.com | Guest posting sites | Free | Involved | Later | Needs checking | Pitch a first-person essay for the Voices section if you work in or build tools for education. | Vendors may not pitch their own products, and editors decide on any links. | Added 2026-11-01 | Open EdSurge submit page (new tab)EdSurge details |
| 209 | 43 | EU-Startups | 70 | Sometimes dofollow | eu-startups.com | Startup directories | Free | Involved | Later | Needs checking | Pitch if EU/startup angle exists. | Geography fit needed. | 2026-07-30 | Open EU-Startups submit page (new tab)EU-Startups details |
| 210 | 43 | ExpertFile | 60 | Sometimes dofollow | expertfile.com | PR and source platforms | Free + paid tier | Moderate | Later | Needs checking | Create an expert profile with your topics, bio and website so journalists and event organisers can find you. | Profiles need real credentials; premium features cost extra. | Added 2026-11-01 | Open ExpertFile submit page (new tab)ExpertFile details |
| 211 | 43 | Ezilon | 50 | Sometimes dofollow | ezilon.com | Business directories | Free + paid tier | Moderate | Later | Needs checking | Choose your regional or topical category and submit your site. | Free submissions can wait a long time; paid ones are reviewed faster. | Added 2026-11-01 | Open Ezilon submit page (new tab)Ezilon details |
| 212 | 43 | Flourish | 70 | Sometimes dofollow | flourish.studio | Publishing platforms | Free + paid tier | Moderate | Later | Needs checking | Publish an interactive chart or story from your own data and credit your site in the source note. | Free projects are public; you must have the rights to the data you publish. | Added 2026-11-01 | Open Flourish submit page (new tab)Flourish details |
| 213 | 43 | GeekWire | 85 | Sometimes dofollow | geekwire.com | Guest posting sites | Free | Involved | Later | Needs checking | Pitch a guest commentary on technology, startups or the Pacific Northwest tech scene to the editors. | Commentaries must be opinion pieces under your own name, not product announcements; links are editor-controlled. | Added 2026-11-01 | Open GeekWire submit page (new tab)GeekWire details |
| 214 | 43 | Ghost | 90 | Sometimes dofollow | ghost.org | Publishing platforms | Free + paid tier | Moderate | Later | Live, conditional | Run a genuine your tool privacy/security publication and add contextual links in original posts and About pages. | Requires sustained original publishing; self-hosted pages are on your own domain, not a third-party backlink. | 2026-08-03 | Open Ghost submit page (new tab)Ghost details |
| 215 | 43 | Habr | 85 | Sometimes dofollow | habr.com | Communities and forums | Free | Involved | Later | Needs checking | Publish an in-depth technical article in Russian and link your project where relevant. | Moderated; advertising requires a company blog. | Added 2026-11-01 | Open Habr submit page (new tab)Habr details |
| 216 | 43 | Hakin9 | 55 | Sometimes dofollow | hakin9.org | Guest posting sites | Free | Involved | Later | Needs checking | Contact the editors with a proposal for a technical security article or tutorial for the magazine or blog. | Deeply technical, original content is expected; marketing pieces are declined. | Added 2026-11-01 | Open Hakin9 submit page (new tab)Hakin9 details |
| 217 | 43 | Harvard Business Review | 95 | Sometimes dofollow | hbr.org | Guest posting sites | Free | Involved | Later | Needs checking | Read the guidelines for authors and submit a short pitch with a clear, evidence-backed management idea. | Acceptance is very selective and links are rare; most value comes from authority rather than the link itself. | Added 2026-11-01 | Open Harvard Business Review submit page (new tab)Harvard Business Review details |
| 218 | 43 | Inc42 | 75 | Sometimes dofollow | inc42.com | Startup directories | Free | Involved | Later | Needs checking | Pitch if there is funding/traction/product news. | High bar; no generic backlink ask. | 2026-07-30 | Open Inc42 submit page (new tab)Inc42 details |
| 219 | 43 | Infogram | 80 | Sometimes dofollow | infogram.com | Publishing platforms | Free + paid tier | Moderate | Later | Needs checking | Create a chart or infographic from your data and share it publicly with a source link to your site. | Free projects are public and carry branding. | Added 2026-11-01 | Open Infogram submit page (new tab)Infogram details |
| 220 | 43 | InfoQ | 85 | Sometimes dofollow | infoq.com | Publishing platforms | Free | Involved | Later | Not submitted | Pitch only major developer/security story. | High authority but low acceptance. | 2026-07-30 | Open InfoQ submit page (new tab)InfoQ details |
| 221 | 43 | IoT For All | 60 | Sometimes dofollow | iotforall.com | Guest posting sites | Free | Involved | Later | Needs checking | Use the contribute page to pitch an educational article on IoT technology, deployment or business use. | Content must be vendor-neutral; product promotion and keyword-stuffed links are removed. | Added 2026-11-01 | Open IoT For All submit page (new tab)IoT For All details |
| 222 | 43 | Jeff Bullas | 65 | Sometimes dofollow | jeffbullas.com | Guest posting sites | Free | Involved | Later | Needs checking | Use the site's guest submission page to send a complete, original article on digital marketing, blogging or online business. | Submissions are reviewed for quality and originality; heavy keyword linking or sales pitches are removed. | Added 2026-11-01 | Open Jeff Bullas submit page (new tab)Jeff Bullas details |
| 223 | 43 | Mailchimp Integrations | 95 | Sometimes dofollow | mailchimp.com | Marketplaces and app stores | Free | Involved | Later | Needs checking | If you build a Mailchimp integration, apply to have it listed in their directory. | Integration must be live and reviewed by their partner team. | Added 2026-11-01 | Open Mailchimp Integrations submit page (new tab)Mailchimp Integrations details |
| 224 | 43 | MailerLite | 80 | Sometimes dofollow | mailerlite.com | Publishing platforms | Free + paid tier | Moderate | Later | Needs checking | Use the free plan to publish a public newsletter archive or landing page that links to your site. | Accounts go through an approval check and must follow anti-spam rules. | Added 2026-11-01 | Open MailerLite submit page (new tab)MailerLite details |
| 225 | 43 | MSSQLTips | 60 | Sometimes dofollow | mssqltips.com | Guest posting sites | Free | Involved | Later | Needs checking | Apply to become an author and write practical SQL Server or Azure data tips in their standard format. | Tips follow a set template and are reviewed for accuracy; your link appears in the author profile. | Added 2026-11-01 | Open MSSQLTips submit page (new tab)MSSQLTips details |
| 226 | 43 | Network World | 85 | Sometimes dofollow | networkworld.com | Guest posting sites | Free | Involved | Later | Needs checking | Apply to the expert contributor network with your background in networking or infrastructure and a list of article ideas. | Vendor-neutral writing is required and editors control links. | Added 2026-11-01 | Open Network World submit page (new tab)Network World details |
| 227 | 43 | php[architect] | 50 | Sometimes dofollow | phparch.com | Guest posting sites | Free | Involved | Later | Needs checking | Send an article proposal on a PHP topic you know well; accepted authors write for the monthly magazine. | Articles are technically edited and go into the magazine, so web links are limited to the author bio. | Added 2026-11-01 | Open php[architect] submit page (new tab)php[architect] details |
| 228 | 43 | Redocly | 60 | Sometimes dofollow | redocly.com | Publishing platforms | Free + paid tier | Moderate | Later | Needs checking | Publish your OpenAPI reference docs with Redocly and link back to your product and signup. | Free tiers have limits; docs should describe a real API. | Added 2026-11-01 | Open Redocly submit page (new tab)Redocly details |
| 229 | 43 | RSS.com | 65 | Sometimes dofollow | rss.com | Publishing platforms | Free + paid tier | Moderate | Later | Needs checking | Host your podcast and add your website to show notes and the podcast profile page. | Free use has limits; content must follow the hosting rules. | Added 2026-11-01 | Open RSS.com submit page (new tab)RSS.com details |
| 230 | 43 | Simple Talk | 75 | Sometimes dofollow | red-gate.com | Guest posting sites | Free | Involved | Later | Needs checking | Contact the editors with an article proposal on SQL Server, databases, DevOps or .NET development. | Articles are technically reviewed and must be original; promotional content is not accepted. | Added 2026-11-01 | Open Simple Talk submit page (new tab)Simple Talk details |
| 231 | 43 | Springwise | 75 | Sometimes dofollow | springwise.com | Other opportunities | Free | Involved | Later | Needs checking | Pitch your tool as innovation/useful web tool platform. | Needs genuinely newsworthy angle. | 2026-07-30 | Open Springwise submit page (new tab)Springwise details |
| 232 | 43 | SQLServerCentral | 65 | Sometimes dofollow | sqlservercentral.com | Guest posting sites | Free | Involved | Later | Needs checking | Register and submit a technical article on SQL Server or data platform work for editorial review. | Articles must be original and technical; you can link to your own blog in your profile. | Added 2026-11-01 | Open SQLServerCentral submit page (new tab)SQLServerCentral details |
| 233 | 43 | Starter Story | 70 | Sometimes dofollow | starterstory.com | Startup directories | Free | Involved | Later | Needs checking | Pitch founder story if revenue/traffic story is strong. | Often paid; needs real metrics. | 2026-07-30 | Open Starter Story submit page (new tab)Starter Story details |
| 234 | 43 | StartupTalky | 55 | Sometimes dofollow | startuptalky.com | Startup directories | Free + paid tier | Moderate | Later | Needs checking | Submit your startup story with founding background, product and traction details. | Editorial review applies; some featured options are paid. | Added 2026-11-01 | Open StartupTalky submit page (new tab)StartupTalky details |
| 235 | 43 | StickyMinds | 60 | Sometimes dofollow | stickyminds.com | Guest posting sites | Free | Involved | Later | Needs checking | Submit an article proposal on testing, QA or agile delivery to the editors through the site. | Articles must share practical experience and avoid vendor promotion. | Added 2026-11-01 | Open StickyMinds submit page (new tab)StickyMinds details |
| 236 | 43 | Stoplight | 65 | Sometimes dofollow | stoplight.io | Publishing platforms | Free + paid tier | Moderate | Later | Needs checking | Design your API and publish public docs with a link to your product. | Free use is limited; docs should describe a real API. | Added 2026-11-01 | Open Stoplight submit page (new tab)Stoplight details |
| 237 | 43 | SwaggerHub | 80 | Sometimes dofollow | swagger.io | Publishing platforms | Free + paid tier | Moderate | Later | Needs checking | Publish your OpenAPI definition publicly on SwaggerHub with a link to your product docs. | Free accounts have limits; definitions should be for real APIs. | Added 2026-11-01 | Open SwaggerHub submit page (new tab)SwaggerHub details |
| 238 | 43 | Tech.eu | 65 | Sometimes dofollow | tech.eu | Startup directories | Free + paid tier | Moderate | Later | Needs checking | Email funding or acquisition news with key facts and a press kit. | Coverage focuses on European funding rounds and exits. | Added 2026-11-01 | Open Tech.eu submit page (new tab)Tech.eu details |
| 239 | 43 | Techreviewer | 50 | Sometimes dofollow | techreviewer.co | Review platforms | Free + paid tier | Moderate | Later | Needs checking | Create a company profile and gather verified client reviews for your dev or IT services. | Reviews are checked; paid plans boost visibility. | Added 2026-11-01 | Open Techreviewer submit page (new tab)Techreviewer details |
| 240 | 43 | UXmatters | 60 | Sometimes dofollow | uxmatters.com | Guest posting sites | Free | Involved | Later | Needs checking | Contact the editors with a proposal for an in-depth UX article or column based on your professional experience. | Articles are edited for depth and must not promote products; your link goes in the author bio. | Added 2026-11-01 | Open UXmatters submit page (new tab)UXmatters details |
| 241 | 40 | AllTopStartups | 50 | Sometimes dofollow | alltopstartups.com | Startup directories | Free + paid tier | Involved | Later | Needs checking | Submit/pitch startup listing or story. | Editorial quality; no link-drop. | 2026-07-30 | Open AllTopStartups submit page (new tab)AllTopStartups details |
| 242 | 40 | Prototypr | 60 | Sometimes dofollow | prototypr.io | Design galleries | Free + paid tier | Involved | Later | Needs checking | Publish/pitch design/dev article linking your tool. | Quality content only. | 2026-07-30 | Open Prototypr submit page (new tab)Prototypr details |
| 243 | 40 | StartupNation | 65 | Sometimes dofollow | startupnation.com | Startup directories | Free + paid tier | Involved | Later | Needs checking | Create profile/comment or pitch startup article. | Useful content required. | 2026-07-30 | Open StartupNation submit page (new tab)StartupNation details |
| 244 | 40 | Webrazzi | 70 | Sometimes dofollow | webrazzi.com | Startup directories | Free + paid tier | Involved | Later | Needs checking | Submit startup for coverage/listing. | Regional/media; pitch quality matters. | 2026-07-30 | Open Webrazzi submit page (new tab)Webrazzi details |
| 245 | 38 | Cloud Security Alliance | 80 | Sometimes dofollow | cloudsecurityalliance.org | Startup directories | Paid | Quick | Later | Live, conditional | Consider only after your tool becomes a substantive cloud or AI security vendor and can participate in CSA programs. | Commercial membership, not a backlink purchase; directory placement does not equal certification or product endorsement. | 2026-08-05 official Startup Membership Agreement | Open Cloud Security Alliance submit page (new tab)Cloud Security Alliance details |
| 246 | 38 | Microns | 40 | Sometimes dofollow | microns.io | Marketplaces and app stores | Paid | Quick | Later | Needs checking | List a small online business or side project for sale. | Paid listing fee; small projects fit best. | Added 2026-11-01 | Open Microns submit page (new tab)Microns details |
| 247 | 38 | There's An AI For That | 60 | Sometimes dofollow | theresanaiforthat.com | AI tool directories | Paid | Quick | Later | Not submitted | Submit only AI-specific your tool modules. | Paid only; conflicts if platform not AI-first. | 2026-07-30 | Open There's An AI For That submit page (new tab)There's An AI For That details |
| 248 | 36 | Awwwards | 85 | Sometimes dofollow | awwwards.com | Design galleries | Paid | Moderate | Later | Needs checking | Submit your tool web design if premium/polished. | High authority; paid and design quality gate. | 2026-07-30 | Open Awwwards submit page (new tab)Awwwards details |
| 249 | 36 | Captivate | 60 | Sometimes dofollow | captivate.fm | Publishing platforms | Paid | Moderate | Later | Needs checking | Host a podcast with its included website and add links to your site in episode notes. | It is a paid service with a free trial. | Added 2026-11-01 | Open Captivate submit page (new tab)Captivate details |
| 250 | 36 | CSS Design Awards | 70 | Sometimes dofollow | cssdesignawards.com | Design galleries | Paid | Moderate | Later | Needs checking | Submit site for CSS/design award. | Only after homepage/tool UX polished. | 2026-07-30 | Open CSS Design Awards submit page (new tab)CSS Design Awards details |
| 251 | 36 | Fabrik | 55 | Sometimes dofollow | fabrik.io | Other opportunities | Paid | Moderate | Later | Live, conditional | Publish real your tool film, design, illustration or product case studies and connect them to the appropriate project pages. | Strong creative-work fit only; no credit card for trial, but a lasting public portfolio requires a paid plan. | 2026-08-04 | Open Fabrik submit page (new tab)Fabrik details |
| 252 | 36 | Krop | 55 | Sometimes dofollow | krop.com | Other opportunities | Paid | Moderate | Later | Live, conditional | Build a real founder or your tool creative portfolio and link relevant case studies to the corresponding live tools. | Designed for creative professionals; paid ongoing hosting and authentic portfolio work are required. | 2026-08-04 | Open Krop submit page (new tab)Krop details |
| 253 | 36 | Libsyn | 80 | Sometimes dofollow | libsyn.com | Publishing platforms | Paid | Moderate | Later | Needs checking | Host your podcast and use the included show site and notes to link to your website. | It is a paid hosting service. | Added 2026-11-01 | Open Libsyn submit page (new tab)Libsyn details |
| 254 | 36 | Mynewsdesk | 75 | Sometimes dofollow | mynewsdesk.com | PR and source platforms | Paid | Moderate | Later | Needs checking | Publish press releases, images and news in a hosted newsroom that links to your site. | It is a paid service and releases must be genuine news. | Added 2026-11-01 | Open Mynewsdesk submit page (new tab)Mynewsdesk details |
| 255 | 36 | pr.co | 60 | Sometimes dofollow | pr.co | PR and source platforms | Paid | Moderate | Later | Needs checking | Host a branded newsroom with your press releases and media kit, linking back to your site. | It is paid; releases should be real announcements. | Added 2026-11-01 | Open pr.co submit page (new tab)pr.co details |
| 256 | 36 | Prowly | 65 | Sometimes dofollow | prowly.com | PR and source platforms | Paid | Moderate | Later | Needs checking | Use the paid PR tool to host a public newsroom and send releases to relevant journalists. | Mass irrelevant pitching harms deliverability and breaks the terms. | Added 2026-11-01 | Open Prowly submit page (new tab)Prowly details |
| 257 | 36 | ReleaseWire | 65 | Sometimes dofollow | releasewire.com | PR and source platforms | Paid | Moderate | Later | Needs checking | Publish a newsworthy announcement through the paid distribution service with a link to your site. | Releases are reviewed for news value and links may be nofollow on syndication partners. | Added 2026-11-01 | Open ReleaseWire submit page (new tab)ReleaseWire details |
| 258 | 36 | Transistor | 65 | Sometimes dofollow | transistor.fm | Publishing platforms | Paid | Moderate | Later | Needs checking | Host a podcast and use the built-in website and show notes to link to your product. | It is a paid service with a free trial. | Added 2026-11-01 | Open Transistor submit page (new tab)Transistor details |
Four steps that work for a new site, a SaaS or a side project. No paid link packages, nothing that risks a penalty.
Before submitting anywhere, have a one-line description, a 150-word description, a square logo and two or three screenshots ready. Every form asks for some mix of these.
Start with the free, quick rows: profile creation sites and free directories. They are one form each and build the entity signals search engines use to understand who you are.
Then pick a handful of high DA and dofollow sites that fit your niche, and write proper guest posts or launch posts for them. Ten relevant links beat a hundred random ones.
Note where you submitted and when. Recheck after a month, update stale descriptions, and never pay for bulk link packages: they put the whole site at risk.
Behind the list
Every row here starts as a line in a sheet, gets normalised into one of 16 groups, scored for cost, effort and impact, and written up with the steps to actually submit. The floor below represents that pipeline.
Open the sheet viewAn illustration of the AltF Backlinks floor: opportunities sourced at the back, vetted for cost and effort by the engineering pod, written up for outreach by the design pod, then tracked to placement along a line.
One-shot launches where timing and preparation decide the outcome.
Publications that accept contributed articles. Slow and editorial, but the links are earned.
Fast-growing listings specifically for AI-powered tools.
Extension, plugin and integration stores. Real review processes, real distribution.
Startup listings, beta lists and founder media.
General tool and software catalogues with real search traffic.
B2B review sites. Slow to approve, strong once live.
Package, image and docs hosting that carries real authority.
Showcases judged on craft. A good screenshot matters more than copy.
Write once, link back. Editorial standards vary widely.
Get quoted or distribute a release. Slower, higher ceiling.
Company and local listings. Unglamorous, consistently indexed.
Owned pages you control: company, founder, knowledge-panel entities.
Answer real questions. Never drop a bare link.
Brand surface and referral traffic more than link equity.
Everything that does not fit the buckets above.