Independent register of AI agents & harnesses · no sponsored placementsEdition 2026-09 · 107 entries · evidence to 26 Sept 2026

Compare / Herdr vs T3 Code

Herdr vs T3 Code

Herdr rates 68 against T3 Code's 67 in this edition. The table lines up every dimension we record; the leading value in each numeric row is marked. Add a third or fourth entry.

Dimension
HerdrHerdr (Can Celik; YC F26)
T3 CodePing Labs (ping.gg / T3 Tools)
Rating
AgentsWisdom score6867
Confidencehighhigh
Rank in categoryNo. 3 of 7No. 4 of 7
Pillars
Adoption & momentum7967
Experts (independent reviews)7564
Crowd (community sample)4770
Community posts sampled1222
Experts vs crowdCrowd cooler by 28Crowd warmer by 6
Adoption
GitHub stars41k24k
npm weekly downloadsn/e20k
PyPI monthly downloadsn/en/e
VS Code installsn/en/e
Reported usersn/en/e
Reported customer organisationsn/en/e
Releases, last 90 days814
Benchmarks (shown, not scored)
Terminal-Bench 2.0not listednot listed
SWE-benchnot listednot listed
Independent reviews38
Trust & safety
Overall gradeBB
Permission modeln/eC
Data access scopen/en/e
Data storageAA
Data retention & trainingn/en/e
Incident historyAA
ComplianceDD
TransparencyAA
Price
PriceFreeFree
Plans
  • Herdr runtime (open source): Free
  • Free (open source): Free
Product
CategoryOrchestrators & meta-harnessesOrchestrators & meta-harnesses
MakerHerdr (Can Celik; YC F26)Ping Labs (ping.gg / T3 Tools)
LicenceApache-2.0MIT
Use it viaCLIDesktop app, Web app, Mobile app, CLI
Runs onmacos, linux, windowsmacos, windows, linux, web
Models it drivesany terminal agent CLI (Claude Code, Codex, Cursor, opencode, Copilot, Grok, Hermes, Pi and others; 22 detected by default)Claude (via Claude Code), GPT (via Codex), Cursor models (via Cursor CLI), Grok (via Grok Build), Gemini (via Antigravity), any provider supported by OpenCode
Key features
  • Workspaces, tabs and panes with mouse support and tmux-style detach/reattach
  • Automatic agent state detection (working, blocked, done, idle) with notifications
  • Remote machines over OpenSSH from one client window (v0.9.0+)
  • Socket API and CLI for scripting agents, panes, workspaces and worktrees
  • Plugin marketplace and custom popup panes
  • Session history and restore stored locally
  • Drives locally installed agent CLIs: Codex, Claude Code, Cursor, Grok Build, OpenCode, Antigravity
  • Separate git worktree per agent thread
  • Inline diff review and one-click commit, push and pull request
  • Per-thread permission modes: Supervised, Auto-accept edits, Auto, Full access
  • Remote control from iOS/Android/web via T3 Connect, LAN pairing or Tailscale
  • Can run as a background service (`t3 service install`)
  • Switch model/provider mid-thread
Verdicts
Praised for
  • Users running many agents say it makes it easier to see which agent needs attention than plain tmux (HN comments, July-Sept 2026)
  • Reconnect from several machines to the same running agents over SSH (HN, Bitdoze review)
  • Reviewers credit the socket API for orchestration patterns tmux lacks (Bitdoze, Developers Digest)
  • Free and open source; uses the subscriptions you already pay for (Thalhammer, Better Stack, HN comments)
  • Remote/mobile control of agents running on your own machine (Thalhammer, Geniar, HN and Reddit users)
  • Worktree per agent makes parallel agents easier (HN user, Better Stack)
Criticised for
  • Several users do not see the added value over tmux or zellij (HN, r/commandline)
  • Reports of lag, rendering and hotkey issues, e.g. with many remote machines or under WSL (HN Sept 2026, r/ClaudeCode)
  • Agent detection relies on screen manifests and is probabilistic for unsupported agents (Developers Digest)
  • Early software with rough edges and bugs, acknowledged by the project itself (Geniar, AICodeKing, HN comments)
  • Default permission mode for new threads is Full access (no approval prompts)
  • Missing conveniences such as queuing multiple messages (Geniar)
Evidence
Evidence collected26 Sept 202626 Sept 2026
Sources cited44