Best X Builds

Best Productivity Builds on X

Second brains, binders, schedulers and cleaners that sit in a real workflow. 75 builds on this page, each with the original post.

Xdeveloper toolsai

Miks

A terminal for running a bunch of coding agents at once, with workspaces in a sidebar. Made as a replacement for Terminal.app.

Xopen sourceindie

Quill

Local voice dictation for Windows. One hotkey types what you said. Another turns a rough thought into a prompt you still have to accept.

Xgrok botgrok

100 Grok Bot Use Cases

SpaceXAI's Eric Zakariasson lists 100 real Grok Bot jobs: overnight outbound, CRM rebuilds, Gong win/loss, Salesforce from a phone, security questionnaires.

Xgrok botgrok

Grok Chrome Bridge

Chrome extension that lets Grok Build attach to the Chrome profile you mark Active, so the agent sees your real tabs, cookies and logins instead of a blank isolated browser.

Xopen sourceai

LedgerPDF

Free, offline, open-source workpaper binder for accountants. Agents connect over local MCP, every change is journaled, and humans still sign off.

Xclaudeskills

Leak Radar

Ten free Claude Code skills that hunt money leaks: dead subscriptions, price hikes, idle cash, the right card per purchase, and debt payoff math.

Xgrokgrok bot

Grok Bot

AI teammates from Cursor + SpaceXAI that sign into your tools, do real work, and return finished results. Includes 'Teach A Task' feature that watches your screen and turns workflows into skills.

Xclaudeskills

Book-to-Skill

Turns any PDF, EPUB, DOCX or Markdown book into a ready-to-use Claude Skill that loads only the relevant chapters when needed.

Xopen sourceai

ThoughtDAG

Local-first visual LLM workspace where graph edges control model context, with branching, merging and document extraction.

Xopen sourceagents

OpenWorker by Andrew Ng

Open-source desktop AI coworker that delivers finished work: polished documents, Slack messages and calendar updates, with 35 connectors and permission tiers.