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
Highest impactimpact 98
- SubmitNoSignupTools (opens in a new tab)
NoSignupTools
nosignuptools.comSubmit individual your tool tools that are free, secure and usable without registration.
FreeModerateVerified live - SubmitSPDX Tool Supplier Directory (opens in a new tab)
SPDX Tool Supplier Directory
spdx.devMake your tool generate or consume valid SPDX, document validation, then file the requested supplier-information issue with its canonical URL.
Estimated domain authority DA ~55FreeModerateVerified live
High impactimpact 88–81
- SubmitW3C Web Accessibility Evaluation Tools List (opens in a new tab)
Submit one released evaluator such as WCAG Quick Auditor with accurate standards, scope, license, release date, and accessibility-statement details.
Estimated domain authority DA ~95PaidModerateVerified live - SubmitBusiness Tool Vault (opens in a new tab)
Business Tool Vault
businesstoolvault.comSubmit your tool with a clear business use case, logo and optional demo video.
FreeModerateVerified live - SubmitCodeMeta Tools (opens in a new tab)
CodeMeta Tools
codemeta.github.ioBuild a current CodeMeta validator, privacy linter, or integration and propose inclusion through the official website repository.
Estimated domain authority DA ~40FreeModerateVerified live - SubmitDockstore (opens in a new tab)
Dockstore
dockstore.orgPublish your containerized research workflow or tool using CWL, WDL, Nextflow, Galaxy, or a supported notebook descriptor.
Estimated domain authority DA ~50FreeModerateVerified live - SubmitGetLatka (opens in a new tab)
GetLatka
getlatka.comCreate your company profile using your official email.
Estimated domain authority DA ~70NofollowFreeModerateVerified live - SubmitHot Softwares (opens in a new tab)
Hot Softwares
hotsoftwares.comCreate a vendor account and submit accurate your tool features, logo and pricing.
FreeModerateVerified live - SubmitOMR Reviews (opens in a new tab)
OMR Reviews
omr.comSuggest your tool and complete its B2B software profile.
Estimated domain authority DA ~70FreeModerateVerified live - SubmitToolhunt (opens in a new tab)
Toolhunt
toolhunt.devEmail your complete listing with a concise description, URL, tags, pricing, logo, screenshots and real features.
FreeModerateVerified live - SubmitTypst Universe (opens in a new tab)
Typst Universe
typst.appBuild a reusable Typst privacy, accessibility, or document-checking package with a valid manifest, docs, examples, and tests, then submit it to the official packages repository.
Estimated domain authority DA ~60FreeModerateVerified live - SubmitZenodo (opens in a new tab)
Zenodo
zenodo.orgPublish your genuine open dataset, benchmark, software release, poster, or reproducible research artifact and connect its related identifier to your tool.
Estimated domain authority DA ~85NofollowFreeModerateVerified live - SubmitCybersecTools (opens in a new tab)
CybersecTools
cybersectools.comSubmit your security-focused product or tool for editorial classification.
Free + paid tierModerateVerified live
Usefulimpact 66–62
- 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 - 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 - 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
Long tailimpact 56–42
- 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 - SubmitAstrophysics Source Code Library (opens in a new tab)
Astrophysics Source Code Library
ascl.netSubmit your -related astronomy utility only after it has been used in research submitted to or published by a refereed journal.
Estimated domain authority DA ~55FreeModerateVerified live - SubmitCSDMS Model Repository (opens in a new tab)
CSDMS Model Repository
csdms.colorado.eduOpen-source a relevant geoscience model or component, complete the model questionnaire, and provide its code archive for CSDMS testing.
Estimated domain authority DA ~90FreeModerateVerified live - SubmitOpenEBench (opens in a new tab)
OpenEBench
openebench.bsc.esOrganize a rigorous life-science privacy-tool benchmark or participate with your eligible method and publish validated results.
Estimated domain authority DA ~40FreeModerateVerified live - SubmitpyOpenSci (opens in a new tab)
pyOpenSci
pyopensci.orgSubmit a mature scientific Python package related to your privacy or accessibility workflow for public review and listing.
Estimated domain authority DA ~45FreeModerateVerified live - SubmitrOpenSci (opens in a new tab)
rOpenSci
ropensci.orgIf your tool produces a research-grade R package, submit a presubmission inquiry and the package for open review.
Estimated domain authority DA ~70FreeModerateVerified live - SubmitROS Index (opens in a new tab)
ROS Index
index.ros.orgBuild a real ROS package for your robotics/privacy/safety workflow, release it through rosdistro and expose maintained README, documentation and source links in ROS Index.
Estimated domain authority DA ~70FreeModerateVerified live - SubmitNITRC (opens in a new tab)
NITRC
nitrc.orgRegister an actual neuroimaging privacy, quality-control, or data-processing tool through NITRC's resource workflow.
Estimated domain authority DA ~55Free + paid tierModerateVerified live - SubmitUpRank (opens in a new tab)
UpRank
uprank.comSubmit your tool for manual inclusion in the software directory.
Not statedModerateVerified 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.