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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.
Package your legitimate desktop app as an official AppImage, then file the requested issue or pull request for inclusion.
Register your genuinely life-science-focused resource with stable homepage, scientific operations, inputs, outputs, licence, and documentation.
Create a tested CapRover one-click definition for your real self-hosted service and contribute it to the linked official community repository.
Build a genuine CWL validator, security tool, or implementation and propose its inclusion with compliance evidence.
Publish a privacy-respecting open-source Android companion app, then file a packaging request or merge request.
Create software vendor listing.
Submit B2B software listing.
Archive your genuine public source repository and add its resulting SWHID permalink to release and citation metadata.
Add your tool if accepted; create company stack.
If your tool ships a real tool that reads, validates, generates, visualizes, or otherwise supports AsyncAPI documents, add the required .asyncapi-tool metadata file and submit it for the public tools dashboard.
If your component is open source and genuinely targeted at public administration, add valid publiccode.yml metadata so the catalogue crawler can discover it.
Build a generic DHIS2 health-data de-identification or permission-audit app and submit it to App Hub for core-team review.
Contact them to have your Windows or Mac software added to the catalogue.
Send your Windows or Mac software for review via their submission or contact page.
Release your genuinely free-software desktop or self-hosted component with free documentation and transparent downloads, then submit a custom directory entry.
Deposit your research-level open-source component or related preprint/report with accurate project and source links.
Archive your authentic release, manual or research artifact with accurate metadata and official source URL.
Add your Mac app and keep version updates current so users get notified.
Submit your Windows utility with a PAD file or download link for editorial review.
Submit only your substantive free-software component that runs primarily on free systems and needs authentic Savannah project hosting and collaboration.
Submit freeware or shareware for Windows via their author submission page.
Suggest 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.
Contribute a substantive accessibility role template, translation or toolkit improvement with useful source attribution.
Ask the TechSpot team to add your app to the downloads section, with version notes.
Build your Trello Power-Up, register it, sign the developer agreement, and submit it.
Create your public repository and distribute real signed DEB, RPM, npm, Maven, Helm or other supported packages with accurate metadata.
List software in relevant category.
Create software listing/vendor profile.
Submit/claim software alternative listing if available.
Create vendor account and submit software.
Publish your genuine benchmark, dataset, software artifact, poster, or methods report with the canonical project URL in metadata.
Create company/software listing.
Publish a clinical-data de-identification or quality tool with source, installation steps, dependencies, documentation, and tests.
Submit your tool if B2B/productivity categories fit.
Submit your tool as productivity/software platform.
Create vendor profile and collect authentic reviews.
Submit product for review/listing.
Submit your tool with homepage URL, privacy-first positioning, logo, screenshots and accurate pricing.
Add SaaS/product profile.
Open-source your reusable research-focused component, archive it with a persistent identifier, and submit a software metapaper with project/code links.
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.