ChatterSift

ChatterSift is an open-source Reddit monitoring tool that watches the subreddits where your customers, competitors, and prospects talk, and alerts your team via email whenever a keyword you care about appears.

What is ChatterSift?

ChatterSift is a Reddit signal monitoring platform designed to turn the noise of Reddit into actionable alerts. It takes as input a list of subreddits and a set of keywords (exact phrases, word-boundary, regex, or semantic patterns), and outputs email notifications within minutes when matches occur. The matching engine is MIT-licensed and can be self-hosted or used via the hosted version at ChatterSift.com.

Key Features

• Keyword Matching — Supports exact phrases, word-boundary, regex patterns across titles, bodies, and comments, with negative filters to reduce false positives.
• Multi-Subreddit Monitoring — One feed configuration covers any number of subreddits, from five to five hundred, without rewriting rules.
• Instant Alerts — Email alerts delivered within minutes; per-keyword rate limits keep your inbox usable.
• Open Source — The matching engine is MIT-licensed and available on GitHub. Self-host for free or use the hosted service.
• Privacy — When self-hosting, your keywords and match history never leave your stack.
• Background Processing — Scheduled workers with retries and graceful degradation ensure reliability.

Who is it for?

• Founders — Catch buying intent and competitor mentions in real time (e.g., "alternative to", "looking for").
• Marketers — Track brand mentions and share of voice across niche subreddits.
• Support Teams — Spot product complaints before they escalate using error-related keywords.
• Product Managers — Surface feature requests that surveys wouldn't catch (e.g., "I wish it had").
• Community Managers — Get pinged when founders, handles, or the brand are named.

What can you do with ChatterSift?

• Monitor buying intent — Founders can track phrases like "alternative to" or competitor names to jump into threads while interest is hot.
• Track brand mentions — Marketers can set up alerts for their brand and category terms to inform campaigns.
• Resolve complaints — Support teams can monitor error codes or "broken" to address issues before they go viral.
• Collect product requests — Product teams can cluster "I wish it had" patterns across subreddits to prioritize features.

Pricing

ChatterSift offers a freemium model: Free ($0/mo, 2 monitor slots, 1 subreddit, daily digest), Starter ($12/mo, 20 slots, unlimited subreddits, semantic matching, all notification cadences), and Growth ($49/mo, 100 slots, unlimited subreddits, semantic matching). Cancel anytime; no credit card required to start. Self-host the open-source engine for free forever.