F5Bot monitors Reddit, Hacker News, and Lobsters for specified keywords and sends alerts within minutes when matches are found. It's a free service that notifies users via email whenever their keywords are mentioned on these platforms.

F5Bot provides basic keyword matching across three popular online communities but lacks intent scoring and sentiment analysis. While the platform excels at identifying raw keyword mentions, it generates significant noise by sending every single mention regardless of context. Users commonly report receiving hundreds of notifications with many false positives due to lack of relevance scoring. Modern alternatives address F5Bot's limitations by using AI to flag posts where someone is actively looking to buy, try, or switch tools, eliminating the need for multiple F5Bot accounts and manual filtering.
Free keyword monitoring and alerts for Reddit, Hacker News, and Lobsters
Starting Price
B2B website lead generation with intent data
Dealfront rebranded as Leadfeeder in March 2026. Leadfeeder is a B2B intent data platform that shows site owners the companies visiting their websites with insights on browsing activity. The platform matches up to 45% of company-level website visitors.
B2B website visitor identification and lead generation
Founded
Starting Price
Funding
Leadfeeder is Dealfront's lead generation platform built around B2B visitor intelligence. It identifies companies visiting your website and enriches those signals with business data to enable precise targeting and sales engagement.
Intent signals and visitor identification for PLG
Koala provides intent signal detection and website visitor identification for product-led growth companies. The platform identifies moments in the customer journey that signify buying intent through website behavior and product usage signals.