Head to head
F5Bot vs Syften
F5Bot is a keyword alerts tool: Free, simple and reliable. Enter a keyword, get an email when it shows up on Reddit or Hacker News. Syften is a keyword alerts tool: Fast keyword monitoring across many communities, with filters and Slack delivery.
| F5Bot | Syften | |
|---|---|---|
| Price | Free | Paid plans, check vendor site |
| What it watches | Reddit, Hacker News, Lobsters | Reddit, Hacker News, X and more |
| AI buyer-intent scoring | No, keyword matching | No, keyword matching |
| Category | Keyword alerts | Keyword alerts |
Details read from f5bot.com and syften.com, last checked October 2026. Check the vendor sites before you subscribe.
Choose F5Bot if
Free, simple and reliable. Enter a keyword, get an email when it shows up on Reddit or Hacker News.
Watch out: It matches words, not meaning. Common category words flood your inbox, and a buyer who describes the problem without your keyword is never caught.
Choose Syften if
Fast keyword monitoring across many communities, with filters and Slack delivery.
Watch out: Filtering is still keyword and rule based, so you write and maintain the filters that separate buyers from noise.
The short version
Perfect for brand-name mentions. For finding buyers in busy subreddits, the noise becomes the job. Good for teams that want reach across many platforms and are happy tuning filters by hand.
Or skip both
If what you want is the posts where someone is asking to buy, Leadhoot scores every new post on Reddit, X and Threads 0–100 for buyer intent and sends only the high scorers to email, or Slack on Agency, within a minute.