Free backlink sites list: 1,964 places to get a link
A maintained list of 1,964 legitimate backlink sites: directories, profile creation sites, guest posting sites, launch platforms, registries and marketplaces. 1,628 are free or have a free tier, 44 usually give a dofollow link, and 781 have an estimated DA of 70 or more. Every row shows authority, link type, cost and effort, and links straight to the submit page.
- 1,964
- Opportunities
- 1,628
- Free or freemium
- 781
- Est. DA 70+
- 208
- Quick wins
All filters3
Usefulimpact 68–59
- Submitbio.tools (opens in a new tab)
bio.tools
bio.toolsRegister your genuinely life-science-focused resource with stable homepage, scientific operations, inputs, outputs, licence, and documentation.
Estimated domain authority DA ~55FreeQuickVerified live - SubmitCapRover One-Click Apps (opens in a new tab)
CapRover One-Click Apps
caprover.comCreate a tested CapRover one-click definition for your real self-hosted service and contribute it to the linked official community repository.
Estimated domain authority DA ~50FreeQuickVerified live - SubmitChanakya Software (opens in a new tab)
Chanakya Software
chanakyasoftware.comCreate a vendor account and list your tool software offering.
FreeQuickVerified live - SubmitCommon Workflow Language (opens in a new tab)
Common Workflow Language
commonwl.orgBuild a genuine CWL validator, security tool, or implementation and propose its inclusion with compliance evidence.
Estimated domain authority DA ~55FreeQuickVerified live - SubmitCreativesFeed (opens in a new tab)
CreativesFeed
creativesfeed.comSubmit relevant your tool utilities under AI, web, or developer categories.
Estimated domain authority DA ~40FreeQuickVerified live - SubmitF-Droid (opens in a new tab)
F-Droid
f-droid.orgPublish a privacy-respecting open-source Android companion app, then file a packaging request or merge request.
Estimated domain authority DA ~75FreeQuickVerified live - SubmitLineZine (opens in a new tab)
LineZine
linezine.comChoose the free listing or purchase your dedicated product page.
Estimated domain authority DA ~20FreeQuickVerified live - SubmitResearch Software Directory (opens in a new tab)
Research Software Directory
research-software-directory.orgRequest access, then publish your rich research-software page with source, getting-started URL, DOI, contributors, and research mentions.
Estimated domain authority DA ~35FreeQuickVerified live - SubmitTolodora (opens in a new tab)
Tolodora
tolodora.comAdd your tool as a SaaS or online service with its official URL.
FreeQuickVerified live - SubmitApps and Reports (opens in a new tab)
Apps and Reports
appsandreports.comRegister as your tool vendor and add its software/service profile.
FreeModerateVerified live - SubmitCodidact Power Users (opens in a new tab)
Codidact Power Users
codidact.orgAnswer real end-user software or privacy questions in depth and reference your specific page only when it materially completes the answer.
Estimated domain authority DA ~40NofollowFreeModerateVerified live - SubmitDHIS2 App Hub (opens in a new tab)
DHIS2 App Hub
apps.dhis2.orgBuild a generic DHIS2 health-data de-identification or permission-audit app and submit it to App Hub for core-team review.
Estimated domain authority DA ~55FreeModerateVerified live - SubmitEVERSE Research Software Quality Kit (opens in a new tab)
EVERSE Research Software Quality Kit
everse.softwareDiscuss your substantive -backed research-software quality task or resource with the Editorial Board, then contribute through its approved workflow.
FreeModerateVerified live - SubmitHAL Open Science (opens in a new tab)
HAL Open Science
hal.scienceDeposit your research-level open-source component or related preprint/report with accurate project and source links.
Estimated domain authority DA ~85FreeModerateVerified live - SubmitJournal of Open Source Education (opens in a new tab)
Journal of Open Source Education
jose.theoj.orgPackage a complete computational privacy or accessibility learning module and submit its reusable artifact plus Markdown paper.
Estimated domain authority DA ~40FreeModerateVerified live - SubmitSaaSQuiver (opens in a new tab)
SaaSQuiver
saasquiver.comSubmit your tool product, website, owner, and category information.
FreeModerateVerified live - SubmitSoftwareMarket (opens in a new tab)
SoftwareMarket
softwaremarket.comRegister your tool and complete the product, company, and category fields.
FreeModerateVerified live - Submitswitching.software (opens in a new tab)
switching.software
switching.softwareSuggest one mature your tool utility through the official Codeberg issue path only if it is an easy-to-use, privacy-respecting replacement for a clearly identified invasive service.
Estimated domain authority DA ~50FreeModerateVerified live - SubmitTeach Access (opens in a new tab)
Teach Access
teachaccess.orgContribute a substantive accessibility role template, translation or toolkit improvement with useful source attribution.
Estimated domain authority DA ~50FreeModerateVerified live - SubmitAppInsight (opens in a new tab)
AppInsight
appinsight.co.ukRequest a free listing with your tool logo, name, slogan, short description, website and best-fit category.
Free + paid tierQuickVerified live - SubmitBIII BioImage Informatics Index (opens in a new tab)
Register a real bioimage privacy, de-identification, or analysis tool with accurate scientific functions, documentation, and maintainers.
Estimated domain authority DA ~40Free + paid tierQuickVerified live - SubmitDevApp Showcase (opens in a new tab)
DevApp Showcase
devappshowcase.comList your tool with live URL, icon, screenshots, category and an optional repository/demo video.
Free + paid tierQuickVerified live - SubmitOpenSaaS Directory (opens in a new tab)
OpenSaaS Directory
opensaas.directorySubmit your public open-source repository and product description after a reusable component is released.
Free + paid tierQuickVerified live - SubmitTool Commons (opens in a new tab)
Tool Commons
toolcommons.orgRelease one standalone your tool utility as open source, ad-free and local-first, then submit via GitHub.
Free + paid tierQuickVerified live - SubmitFigshare (opens in a new tab)
Figshare
figshare.comPublish your genuine benchmark, dataset, software artifact, poster, or methods report with the canonical project URL in metadata.
Estimated domain authority DA ~90NofollowFree + paid tierModerateVerified live - SubmitPhysioNet (opens in a new tab)
PhysioNet
physionet.orgPublish a clinical-data de-identification or quality tool with source, installation steps, dependencies, documentation, and tests.
Estimated domain authority DA ~75FreeInvolvedVerified live - SubmitTechSuggest (opens in a new tab)
TechSuggest
techsuggest.inCreate your vendor account targeting Indian software buyers.
Free + paid tierModerateVerified live - SubmitZuctools (opens in a new tab)
Zuctools
zuctools.siteUse the Submit Tool flow with your tool URL, pricing, categories, original description and icon.
Free + paid tierModerateVerified live - SubmitSaaS Podium (opens in a new tab)
SaaS Podium
saaspodium.comSubmit your tool with logo, pricing model, concise tagline and a unique product description.
Not statedModerateVerified live - SubmitAwesome Indie (opens in a new tab)
Awesome Indie
awesomeindie.comSubmit your tool with homepage URL, privacy-first positioning, logo, screenshots and accurate pricing.
Free + paid tierInvolvedVerified live - SubmitFindersList (opens in a new tab)
FindersList
finderslist.comSubmit your tool to the best-fit software directory with truthful pricing and unique copy.
Free + paid tierInvolvedVerified live - SubmitThatsMyAI (opens in a new tab)
ThatsMyAI
thatsmy.aiSubmit your tool with homepage URL, privacy-first positioning, logo, screenshots and accurate pricing.
Free + paid tierInvolvedVerified live - SubmitSaaS Avenue (opens in a new tab)
SaaS Avenue
saasavenue.comUse the site's Submit Your Product flow for your tool.
Not statedInvolvedVerified live
Long tailimpact 56–53
- SubmitJournal of Open Research Software (opens in a new tab)
Journal of Open Research Software
openresearchsoftware.metajnl.comOpen-source your reusable research-focused component, archive it with a persistent identifier, and submit a software metapaper with project/code links.
Estimated domain authority DA ~55PaidModerateVerified live - SubmitJournal of Statistical Software (opens in a new tab)
Journal of Statistical Software
jstatsoft.orgDevelop an open statistical/privacy-analysis component, then submit a reproducible English LaTeX software paper linking its code and your tool project page.
Estimated domain authority DA ~70PaidInvolvedVerified live - SubmitRO-Crate Community Blog (opens in a new tab)
RO-Crate Community Blog
researchobject.orgBuild a genuine RO-Crate validator or privacy linter and submit a technical developer article using the official blog template.
Estimated domain authority DA ~40PaidInvolvedVerified live
How to build backlinks with this list
Four steps that work for a new site, a SaaS or a side project. No paid link packages, nothing that risks a penalty.
Get the basics right first
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.
Claim profiles and free listings
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.
Go after a few strong links
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.
Track and keep it clean
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
A link opportunity is not a link.
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.
Backlink sites by category
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.