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letta-ai-letta-code

Stateful agents that are like people, with memory, identity, and the ability to learn and adapt

Contributed by Sentinel

helm

Stanford CRFM Holistic Evaluation of Language Models: standardized benchmark suite covering accuracy, calibration, robustness, and fairness.

sysbox

Next-generation container runtime enabling Docker-in-Docker and VM-like isolation without privileged containers.

lighteval

Hugging Face lightweight evaluation library for LLMs across academic benchmarks, with fast local and remote inference support.

crystal

A full-fledged desktop application for orchestrating, monitoring, and interacting with Claude Code agents.

omnara

A command center for AI agents that syncs Claude Code sessions across terminal, web, and mobile. Allows for remote monitoring, human-in-the-loop interaction, and team collaboration.

primeintellect-ai-prime-rl

Agentic RL Training at Scale

Contributed by Sentinel

open-operator

Browserbase Open Operator: an open-source Operator-style web agent built on Stagehand; demonstrates full task decomposition, action planning, and evidence collection using the Browserbase cloud.

tweakcc

Command-line tool to customize your Claude Code styling.

notte

Notte open-source web agent environment. It converts browser sessions into a Markov Decision Process with structured observation/action spaces, making browsers first-class RL and LLM agent environments.

evalplus

Rigorous code generation evaluation framework built on top of HumanEval and MBPP with 80x more test cases.

webarena

WebArena: realistic web-based environment for evaluating autonomous agents on long-horizon browser interaction tasks.

claude-code-tools

Well-crafted toolset for session continuity, featuring skills/commands to avoid compaction and recover context across sessions with cross-agent handoff between Claude Code and Codex CLI. Includes a fast Rust/Tantivy-powered full-text session search (TUI for humans, skill/CLI for agents), tmux-cli skill + command for interacting with scripts and CLI agents, and safety hooks to block dangerous commands.

cc-sessions

An opinionated approach to productive development with Claude Code

tau-bench

Tau-bench: agent benchmark for tool-agent-user interactions in retail and airline domains with policy-grounded evaluation.

harbor-framework-terminal-bench

Measuring and evolving with the frontier of agent work

Contributed by Sentinel

e2b-desktop

E2B Desktop Sandbox: a cloud virtual desktop (Ubuntu + VNC) with Python SDK for screenshot, mouse, keyboard, and process control; designed for AI agents that need a full GUI environment in an isolated VM.

claude-code-ide-el

claude-code-ide.el integrates Claude Code with Emacs, like Anthropic’s VS Code/IntelliJ extensions. It shows ediff-based code suggestions, pulls LSP/flymake/flycheck diagnostics, and tracks buffer context. It adds an extensible MCP tool support for symbol refs/defs, project metadata, and tree-sitter AST queries.

agent-e

Emergence AI agent-E browser agent: hierarchical LLM-based web automation that uses DOM distillation and action abstraction layers to achieve significantly higher benchmark accuracy than prior browser agents.

rulesync

A Node.js CLI tool that automatically generates configs (rules, ignore files, MCP servers, commands, and subagents) for various AI coding agents. Rulesync can convert configs between Claude Code and other AI agents in both directions.

claude-code-nvim

A seamless integration between Claude Code AI assistant and Neovim.

wandb-weave-evals

Weights & Biases Weave evaluation framework for tracking LLM experiments, scoring model outputs, and comparing runs.

langtrace

Open-source observability tool for LLMs with OpenTelemetry-based tracing, automated evals, and annotation workflows.

webvoyager

Research browser agent from Zhejiang University and HKU. It uses GPT-4V interleaved screenshot + HTML observations to complete open-ended web tasks; established an early web-agent benchmark (WebVoyager).