Whitespace.
See who already built your idea — and the space they left open.

CLUSTER POSTS-BROWSER-EXTENSION · 5 ENTRIES · EARLIEST ENTRY 2026-09-21

AI-powered X/Twitter feed filters

These products are browser extensions that filter X/Twitter feeds using user-defined rules and AI judgment, collapsing or highlighting posts while keeping actions reversible. The cluster's dated history is too thin to read a shape from—only 0 dated entries exist before the index start, so it predates the index or its members are undated. Traction leaders are XFlow and tweet-radar (1 star each), followed by sent2x (0 stars).

Entry timeline

ENTRY TIMELINE

AUG 2026: 1SEP 2026: 4
AUG 2026SEP 2026

Each bar is the month a member carries, which is a creation date where the source published one and a crawl date otherwise. Nothing in the index was found before 11 August 2026, and coverage broadened sharply on 14–15 August, so a bar from then on reports how much we found that month, not how much was built; an earlier bar reports how far back a member's own source dated it — not how long we have been watching.

Members by activity

Activity signals, not revenue.

Build origin · 5 unlabelled

Operator · 3 indie · 1 open source · 1 unlabelled

Two labels per entry, never collapsed into one: how it was built, and who stands behind it. Counted over the 5 listed below. Unlabelled means nothing has decided yet — not that the answer is small.

  1. 01retone11★1 moliveindieBrowser extension that refines draft posts for X and Threads, offering multiple tones via the user's own AI subscription.
  2. 02XFlow1★27 days—Browser extension that filters X posts and comments using user-controlled AI moderation policies for a cleaner timeline.
  3. 03tweet-radar1★26 daysliveopen sourceBrowser extension that filters X/Twitter posts by user-defined criteria and highlights posts the AI ranks as relevant.
  4. 04jingliu0★29 days—indieBrowser extension that filters an X/Twitter feed using user rules and AI judgment, collapsing unwanted posts while keeping decisions reversible.
  5. 05sent2x0★1 moliveindieChrome extension for X users that finds relevant posts, drafts replies in the user's voice, and schedules approved posts.

Ranked by traction, highest first, and paged 20 at a time — this is a window on the cluster, never the whole of it. Ties are broken by a stable id so a product cannot appear on two pages or fall between them. Browse every cluster.