Where to promote your SaaS for free
Nine channels that cost nothing but time — ranked by which ones still send real users, not just impressions.
1.Free doesn't mean worthless — it means slow
Every paid channel rents attention; every free channel builds it. Free promotion compounds — a directory listing, a comparison site page, a Reddit post that ranks on Google — these keep sending visitors for months without another dollar or hour. The catch is they take weeks to kick in, which is why founders who only promote on launch day think free promotion doesn't work.
2.The 9 free channels, ranked
Ranked by compounding value — the channels that keep sending traffic after you stop working on them sit above the ones that only work while you're actively posting.
1. Directories and listing platforms
Every indexed listing is a door Google can rank. OnlyFoundrs gives a permanent page plus a dofollow link for a one-time $5 — the rest of this list is free.
2. Comparison sites (AlternativeTo, SaaSHub)
They rank on '[competitor] alternative' — literally your highest-intent traffic. Free, slow approval, compounding value.
3. Niche subreddits
Not r/startups — the subreddit where your actual buyers live. Participate for weeks, then share what you built. Drive-by posts get banned, genuine members get customers.
4. Show HN
Free and instant. If your product is technical, a Show HN can send thousands of the exact right visitors.
5. SEO content on your own domain
One honest post answering a question your buyer Googles outranks a month of social posts. Compounds forever, costs only writing time.
6. Build in public (X, LinkedIn, Indie Hackers)
Sharing the journey builds the audience that launches later. Slow, but the audience is yours — no algorithm can take an email list.
7. Slack / Discord communities
Founder and industry communities. Same rule as Reddit: contribute first. One helpful answer about your domain sends more signups than ten launch posts.
8. Your own product's ecosystem
Integrations marketplaces (Slack, Chrome, Figma, Notion, Zapier) — each listing puts you in front of someone else's user base. Free to submit.
9. Founder posts and guest content
Write the honest story of what you built — on OnlyFoundrs, on dev.to, on your blog. Stories get shared; landing pages don't.
Key takeaway — The pattern: channels that create a permanent asset (listing, post, integration page) compound. Channels that are pure posting decay.
3.The 4-week free promotion sequence
Week 1: submit every listing — OnlyFoundrs, AlternativeTo, SaaSHub, two niche directories, relevant integration marketplaces. Week 2: join three communities where your buyers live and contribute — no posting about your product yet. Week 3: publish one honest 'here's what we built and why' post. Week 4: now share it in the communities where you've been contributing, and run a Show HN if it's technical.
By week 4 you have: permanent indexed listings working in the background, community standing that lets your posts land instead of getting flagged, and a piece of content that can rank. Total spend: a few dollars. This is the whole playbook — free promotion is a system, not an event.
4.What 'free' actually costs
The honest math: free channels cost roughly 10–15 hours of founder time across a month. That's not nothing — but compare it to the equivalent in paid acquisition (a few hundred dollars of ads would buy what a good directory listing sends for years). For pre-revenue founders the trade is obvious; for funded teams it's still the right foundation, because the compounding assets outlast every campaign you'll ever run.
Key takeaway — Free promotion is the only marketing that gets cheaper the longer it runs. Start it before you need it.
The first listing takes two minutes
Permanent page, dofollow link, recommendations that resurface your product — list on OnlyFoundrs and start the compounding.
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