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Best F5Bot alternatives (2026): Reddit keyword alerts after the RSS shutdown

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Every morning, search Reddit and r/subreddits for new posts that mention keywords. Drop the ones that are not really about them, and send me only the posts I have not seen yet.

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Overview

The best F5Bot alternatives in 2026, compared for Reddit keyword alerts: Syften, Brand24 and Reduck. F5Bot emails you when a new Reddit post or comment mentions your keyword, and also watches Hacker News and Lobsters. Reddit stops its RSS feeds on November 13, 2026, and closes its public Data API in March 2027, so many keyword alerts built on a feed stop. The alternatives differ on what they watch, where the alert goes and how they drop the off-topic matches.

F5Bot vs Syften vs Brand24 vs Reduck

As each vendor's own site describes it, read on October 11, 2026. "Not documented" means we did not find it on their site.

Watches Alerts AI filtering After Reddit's RSS shutdown Starting price
F5Bot Reddit posts and comments, Hacker News, Lobsters Email; Slack and Discord on Gold On Gold ($49.99 a month) Not documented Free; Silver $9.99 a month
Syften Reddit, X, Hacker News, GitHub, Stack Exchange, forums, Slack communities, Bluesky and more Email, Slack, RSS, API, webhooks On Standard and PRO Not documented $29.95 a month, 14-day trial
Brand24 Social media, news, blogs and the web, Reddit included Email, mobile push, Slack, Microsoft Teams Not documented Not documented $199 a month billed yearly, 14-day trial
Reduck Reddit posts; every comment of a thread you follow The chat with your agent, or a connector your client has Your agent reads each post Unchanged: it reads the pages you read Free for 100 script runs a month

GummySearch, often listed as an F5Bot alternative, closed on November 30, 2025.

Where each tool is stronger

  • F5Bot: free email alerts on Reddit posts and comments, Hacker News and Lobsters, with AI filtering on its Gold plan.
  • Syften: the most sources, alerts in under a minute on Reddit, and an API, webhooks and MCP on its PRO plan.
  • Brand24: brand monitoring for marketing teams, across social media, news and the web.
  • Reduck: Reddit alerts read and filtered by the AI agent you already use, in your own signed-in browser, with no RSS feed and no API key.

How Reduck does it

Reduck's Reddit scripts run in your own Chrome, through the Reduck extension, where you are signed in to Reddit:

  1. You ask: "Every morning, search Reddit and r/SaaS for new posts that mention my product and my two competitors."
  2. The agent searches all of Reddit for each keyword, newest first, and the subreddits you pick with your whole list in one pass.
  3. It keeps the posts created since the last check and reads each one.
  4. It drops the posts that only share a word with your keyword, and sends you the rest with the subreddit, the title, the comment count and the link.

More on the setup: Reddit keyword alerts after the RSS shutdown.

Who it's for

  • Founders who want to know when someone asks for a product like theirs
  • Marketers who track their brand and competitors on Reddit
  • Anyone whose RSS-based Reddit alerts stop on November 13, 2026

FAQ

It depends on what you need beyond F5Bot. For many sources at once (Reddit, X, Hacker News, GitHub, forums and more) with alerts in under a minute on Reddit, Syften, from $29.95 a month. For brand monitoring across social media, news and the web, Brand24, from $199 a month billed yearly. If you already work with an AI agent and only need Reddit, Reduck lets that agent run the searches in your own browser and send you only the relevant posts.
F5Bot itself is free for email alerts. Reduck is free for 100 script runs a month. Syften and Brand24 each have a 14-day trial with no credit card.
Reddit stops its RSS feeds on November 13, 2026. F5Bot's site does not say how it reads Reddit after that date, or after the public Data API closes in March 2027. A feed reader or a Zapier flow that reads a Reddit search feed stops on that date. Reduck runs the searches in your own Chrome, where you are signed in, so it does not use RSS or the API.
GummySearch closed on November 30, 2025, as its site says.
New posts, their title and text. Reddit's search does not list new comments by keyword. For a thread you follow, your agent reads every comment with get_thread. F5Bot and Syften both watch comments.
Not with Reduck. You stay signed in to Reddit in Chrome, and the Reduck extension runs each search there.
In the chat with your agent, or to email or Slack if your AI client has that connector. F5Bot sends email, and Slack or Discord on its Gold plan. Syften sends email, Slack, RSS, API and webhooks. Brand24 sends email, mobile push, Slack and Microsoft Teams.
Reduck is free for 100 script runs a month, then $20 a month for 1,000 runs or $100 a month for unlimited runs.

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