People looking for open-source software usually arrive through a replacement query, typing the name of a tool they already pay for and the words “open source alternative” after it. The pages that answer those queries are directories, and the ones on this list all accept open-source products. They are grouped by how you get in: directories built for open source, general software directories that carry open-source products alongside commercial ones, and launch platforms that take a repo that is already public.
Listing open source works differently
On the open-source-first directories, position is computed from the repository. Stars, forks, and how recently the project was committed to feed a health score, and several of these sites resync those numbers on their own, so the part you control is whether the listing is accurate, categorised correctly, and claimed by the maintainers.
On the general directories the profile often exists already, created by the directory or suggested by users, which turns the job into claiming and correcting rather than submitting. Two of them travel in groups, the way those platforms are set up today: a single SourceForge profile also populates SlashDot and Top Business Software, and reviews left on Capterra appear on GetApp and Software Advice as well.
Open-source directories (5)
Built for open-source software specifically. Listings are keyed to a repository, most of them display live GitHub stats, and the audience arrives already intending to self-host. Sorted by monthly traffic.
Software repository originally for open-source projects, now also listing proprietary software. Publishes "top" lists and comparison pages by category. One of the oldest software directories on the web, historically, has a strong tech audience.
Open-source project discovery platform tracking 512K+ projects by programming language. Auto-surfaces trending repos from GitHub, Reddit, and Hacker News with community-driven rankings.
Community-driven directory of open-source alternatives to proprietary software, built around GitHub health rather than editorial opinion: every listing carries live stars, forks and last-commit data, and ranking is a computed score from popularity, project age and recent activity. ~750 listed projects, 300K monthly pageviews and a 12K-subscriber weekly newsletter. Listings verified by the maintainers get a 5% ranking bonus.
Curated directory pairing each proprietary product with self-hosted open-source replacements. 500+ listed alternatives, each shown with its GitHub star count and category, and every entry is hand-reviewed against four rules: open source, an alternative to a named proprietary product, actively maintained, and self-hostable. No vendor accounts and no reviews — a listing is an editorial decision, not a profile you manage.
Directory of self-hosted tools that replace paid software, roughly 650 listings, organised by tags (AI coding assistants, workflow automation, CRM, chat, video, developer tools). Each listing is a product page with description, screenshots, tech stack, licence and live GitHub stars/forks, and the whole catalogue is published in an llms.txt feed so AI assistants can cite it.
General software directories that list open source (13)
Where software buyers compare options and where AI assistants read from when they shortlist tools. Each one carries real open-source products today, from PostgreSQL and Nextcloud to Odoo and Grafana, so being free or self-hosted is no barrier to a profile. Sorted by monthly traffic.
Now owned by G2 after acquisition from Gartner (closed February 2026). 2M+ verified reviews across 1,000+ categories. Profiles and reviews syndicate with GetApp and Software Advice (we're expecting integration with G2 some time in 2026). Offers granular pay-per-click bid slots by country and category.
A sister site to SourceForge, the listing is managed from within SourceForge profile
The largest B2B software review platform with 6M+ verified reviews after acquiring Capterra, GetApp, and Software Advice from Gartner in February 2026. Publishes quarterly Grid Reports, badges, awards, and comparison reports used in enterprise procurement. Launching AI-powered software discovery via G2.ai.
Crowd-sourced platform where users suggest and vote on alternatives to existing software. Listings are organized by platform compatibility and user votes determine ranking. One of the largest "alternative to" databases on the web.
Now owned by G2 after acquisition from Gartner (closed February 2026). Localized for 30+ countries with particularly strong EMEA and Latin America presence. Reviews and profiles syndicate with Capterra and Software Advice.
Now owned by G2 after acquisition from Gartner (closed February 2026). Reviews and profiles syndicate with Capterra and GetApp (pending some integration with G2).
SaaS product directory with community features - discussions, upvotes, Q&A threads, and a "verified" badge program (requires verification every 3 months.
A B2B research and review platform that helps businesses find software providers
Software review platform with long-form, vetted reviews and detailed comparison tools. Offers buyer-intent data showing which companies are researching your category.
An established business software directory with more than 300 software categories and almost 50k vendors featured. Crozdesk features user reviews, expert reports and regularly nominates vendors on category awards.
An actively growing software directory, specializing in business software, including Medical, Human Resources, Legal, Accounting and with support of Project Management & CRM categories. Software Finder positions itself more than just a directory but as a decision partner for buyers, providing software research and selection services. Vendors have options to get listed for free or to subscribe for paid lead generation services.
Upd. This directory has moved to a paid-only model for the new listings with a $399 one-time fee. A a software recommendation platform which connects buyers and sellers of software products. It is focused on actively helping the software buyers make better product decisions based on reviews, software comparisons, social popularity, and buyers guides. The categories selection is rather limited (~200 categories total), and each product submission goes through a human review.
A sister site to SourceForge, the listing is managed from within the SourceForge profile
Launch platforms (7)
A burst of attention on one day rather than a permanent entry in a catalogue. These are the ones whose audience is developers or general makers and that accept a product which is already public, which leaves out the pre-launch-only platforms and the ones gated to a single vertical. Blastra does not submit launches on your behalf yet, so treat this section as the field to pick from rather than work we take off your hands. Sorted by monthly traffic.
The main platform for launching new products. It's built around launch events and not the idea of product comparisons, so the reason to be there is to generate buzz from the launch. Best to prepare the event, make sure you have informed maximum people about it so that they could come and vote for your product. If you are treating Product Hunt as yet another place to submit your startup, there's little chance to get noticed.
PeerPush is a new product discovery platform for products, designed specifically for indie makers, startups, and tech enthusiasts. The platform has recently started to promote itself aggressively on Reddit and it promises that a active ecosystem where builders help each other grow. It also promises that AI reads its data and offers MCP and API - for product discovery. Free listing requires about a month-long wait but paid listings get published immediately.
Indie Hackers is a mix of a community, news site and a lunch platform. The main theme is profitable online businesses, mainly solo-founded. Indie Hackers as suggested by its name, features products built by individuals. In order to be featured, you need to add some details about your ocmpany and product, write a post, add revenue data (if any).
Peerlist is a community and a Launchpad, designed to showcase innovative and impactful products to a wide audience. It provides a unique opportunity to share your work with peers, receive valuable feedback, and potentially gain recognition for your efforts.
Launch platform with a decent traffic and domain rating. Worth a push and a backlink. A wait for a free lunch is quite long, but you could pay to launch almost right away.
Open-source dev tools launchpad using GitHub PRs for submissions and GitHub auth for voting. Weekly competitions and newsletter.
Product Hunt-style launch platform for makers and startups. Community voting and daily leaderboards. You can launch there for free, but they say that the wait times are long and they are at full capacity now. Paid launch costs $49, which is affordable.
See where your project already shows up
Blastra scans the directories where your project could be listed, shows you which profiles already exist and what they currently say, then submits or corrects the ones marked Active, each listing filled out completely and optimized for AI answers.
Scan My PresenceDirectory names and logos shown are the property of their respective owners. Blastra is an independent service and is not affiliated with, endorsed by, or sponsored by the directories on this page.
How we curate this catalog
Editorially curated — we don't work with spam directories or freshly created sites. Before we add a directory, we check:
- Traffic starts at roughly 100k+ monthly visits for general directories (Similarweb).
- For niche directories, a lower traffic threshold, sometimes around 10k, because a focused, relevant listing carries real value.
No paid placement — a spot in this catalog can't be bought.
Run a directory and think it fits? Email ceo@blastra.io.