5 Best F5Bot Alternatives in 2026
F5Bot sends free keyword alerts. Five alternatives for more sites, smarter filtering or written replies, with prices checked on 31 Oct 2026.
We make FounderDive, and we list it first. Every other tool here is described from its own site, checked on 31 Oct 2026. Prices change; follow the links and check before you buy.
F5Bot is free and does one thing well: it emails you when your keywords appear on Reddit, Hacker News or Lobsters. If that's all you need, keep using it.
People outgrow it in three ways: they want more sites, fewer noisy alerts, or the reply written for them. We make FounderDive and list it first; it covers the third. Syften and Octolens cover the first two.
How we picked
- Watches Reddit, like F5Bot
- Adds something F5Bot doesn't: more sites, filtering or replies
- Price from the tool's own site, dated
1. FounderDive
F5Bot users who are tired of reading every alert and want the posts worth answering, with the reply written.
- Price (as of 31 Oct 2026)
- Free first hunt; Starter $29.99/mo; Pro $79.99/mo
- Posts for you?
- No
Good at
- Looks in nine places, Reddit first, and keeps only posts that score 72 or more out of 100
- Writes each reply only from facts you gave it; a draft that can't cite one is thrown away
- Eight safety checks on every reply, including group rules, 9 helpful replies per 1 that mentions you, and a shadowban check
Watch out for
- Never posts for you, and some buyers want that. You press send from your own account
- No keyword or brand-mention alerts, no Slack, and X only through Google's index
- Young product with no public customer numbers; almost all kept posts come from Reddit
2. Syften
Fast keyword alerts across many sites, for people who already know how to reply.
- Price (as of 31 Oct 2026)
- Entry $29.95/mo, Standard $49.95/mo, PRO $119.95/mo; trial of 14 days, no card
- Posts for you?
- No
Good at
- Running since 2019; watches Reddit, Hacker News, X, Bluesky, Mastodon, Indie Hackers, Slack groups, Stack Exchange, YouTube, GitHub, DEV, podcasts and blogs
- Alerts usually within a minute, by email, Slack, RSS, API, webhook or MCP
- Shows the last 60 days of matches as soon as you sign up
Watch out for
- You write the filters, read every alert and write every reply
- No safety checks on replies; X and YouTube cost extra
3. Octolens
Teams that monitor a brand across social media, code sites and reviews.
- Price (as of 31 Oct 2026)
- Pro $159/mo and Scale $499/mo, both billed yearly; trial of 7 days, no card
- Posts for you?
- No
Good at
- Very broad: Reddit, X, LinkedIn, YouTube, TikTok, Bluesky, DEV, Hacker News, GitHub, Stack Overflow, reviews
- Alerts, an API and an MCP server
Watch out for
- Priced for teams, billed yearly, with charges for extra mentions and keywords
- Built to monitor, not to write replies
4. RedShip
A Reddit inbox with keyword and competitor tracking, Slack alerts and an MCP server.
- Price (as of 31 Oct 2026)
- Founder $29/mo; Company $49/mo; 7-Day Pass $12 one-time
- Posts for you?
- No
Good at
- Tracks your site, keywords and competitors on Reddit and suggests replies, with no limit on suggestions
- Email and Slack alerts, a REST API and an MCP server
- Weekly reports on Reddit posts that rank on Google and get cited by AI tools
Watch out for
- Reddit only
- No free plan or trial; the cheapest way in is the $12 pass
5. ReplyGain
Low-cost scheduled scans of Reddit, Hacker News, X and Bluesky with drafted replies.
- Price (as of 31 Oct 2026)
- Starter $22/mo; Pro $59/mo; Business $149/mo; 7-Day Pass $9
- Posts for you?
- No
Good at
- Scans on a schedule, every 12 to 2 hours by plan, without you pressing anything
- High monthly volumes: 1,000 leads and 1,000 replies on Starter
- The $9 week pass is refunded if it finds no leads in 3 days
Watch out for
- No safety checks listed on its site that we could find
- No free plan
Questions
Should I replace F5Bot at all?
Not if free alerts are enough. You can keep F5Bot running and add a tool only for the part after the alert.
What is the closest paid upgrade to F5Bot?
Syften: still alerts, but across many more sites, within about a minute, with AI filtering on its Standard plan. Entry is $29.95 a month (as of 31 Oct 2026).
What does F5Bot cost for a business?
Its tiers page says Silver is for non-commercial use and suggests Gold, $49.99 a month, for business (as of 31 Oct 2026).
Can I try FounderDive free?
Yes. Your first hunt is free with no card: every post it finds is readable in full and it writes up to 20 replies. There is no trial after that. Starter is $29.99 a month and Pro $79.99 (as of 31 Oct 2026).