ECC alternatives (2026)
ECC is a frameworks tool: The agent harness performance optimization system. Skills, instincts, memory, security, and research-first development for Claude Code, Codex, Opencode, Cursor and beyond Pricing, as the maker states it: Open source + cloud. Its GitHub repo has 291,617 stars. We found 151 tools in the directory that do overlapping work (writing code, building AI agents, research); 145 of them are open source and 2 list a free or freemium plan. Below are the 10 closest, ranked by how many tasks and sub-tasks they share with ECC, then by GitHub stars.
Updated
Quick answer: the top picks on this list, ranked by GitHub stars and listing maturity, are Orkes, AIOS and AWorld, out of 12 tools listed below. At a glance: 10 open-source, 10 free or freemium and 10 local or self-hosted across 12 link-checked tools (last verified ).
Verified on : every tool link on this page was checked by our daily link check. No paid placements.
Ranked comparison (top 10)
| # | Tool | Pricing | Best for | Open source | Runs locally | GitHub stars |
|---|---|---|---|---|---|---|
| 1 |  Orkes | Open source + cloud | build an agent, automate workflows | Yes | Self-hosted | 32,391 |
| 2 |  AIOS | See site | control a computer, build an agent | No | 6,516 | |
| 3 |  AWorld | Open source | build an agent, research the web | Yes | Self-hosted | 1,246 |
| 4 |  Hermes Agent (Nous Research) | Open source | build an agent, research the web | Yes | Self-hosted | 257,588 |
| 5 |  Agno | Open source + cloud | build multi-agent systems, build an agent | Yes | Self-hosted | 42,917 |
| 6 |  Letta | Open source + cloud | build an agent, give agents memory | Yes | Self-hosted | 25,265 |
| 7 |  Unreal Agent | Open source | build an agent, research the web | Yes | Self-hosted | 2,213 |
| 8 |  Neuron AI | Open source | build an agent, give agents memory | Yes | Self-hosted | 2,160 |
| 9 |  tRPC-Agent-Go | Open source | build an agent, automate workflows | Yes | Self-hosted | 1,878 |
| 10 |  BaseAI | See site | build an agent, give agents memory | No | 1,290 |
Looking for the open-source microservice workflow engine? See Orkes Conductor →.
" if x["slug"]=="conductor" else "") + f"- AIOS (See site): Research AI agent operating system that handles scheduling, context switching, memory, storage and tool management for LLM-based agents. Consider it because it also covers mobile and remote control.
- AWorld (Open source): Agent harness from inclusionAI for building expert agents that search, reproduce and improve on ideas with their own tools and memory. Consider it because it does the same job with a different approach (open source).
- Hermes Agent (Nous Research) (Open source): Open-source agent harness; v0.21.7 stable shipped Oct 12, v0.22.0 RCs Oct 13-14. Consider it because it does the same job with a different approach (open source).
- Agno (Open source + cloud): Python framework and runtime for building, running and managing multi-agent systems with memory, knowledge and tools. Consider it because it also covers multi-agent orchestration.
- Letta (Open source + cloud): Framework for stateful agents with long-term memory (formerly MemGPT). Consider it because it does the same job with a different approach (open source + cloud).
- Unreal Agent (Open source): Unreal Agent is an async-first agent harness from Unreal Labs, a team researching how to make agentic workflows efficient. The library handles inputs with stable IDs and deduplication, append-only sessions that can be forked, and a coordinator that manages each model turn and translates tool calls into operations. It ships with a cloud agent runner, a terminal UI and benchmark runners, under the MIT license. Consider it because it also covers voice and phone agents and evals and benchmarks.
- Neuron AI (Open source): PHP framework for creating and orchestrating AI agents with LLMs, tools, vector stores and memory. Consider it because it also covers RAG and documents and multi-agent orchestration.
- tRPC-Agent-Go (Open source): Go framework for production agent systems with graph workflows, tools, memory, A2A, AG-UI, MCP, evaluation and OpenTelemetry. Consider it because it also covers evals and benchmarks and workflow automation.
- BaseAI (See site): Web AI framework from Langbase for building AI agents with memory (RAG) and deploying them serverless. Consider it because it also covers RAG and documents.
IBM CUGA (Open source): IBM Research's configurable generalist agent (CUGA) for enterprise web and API tasks, with a live demo on Hugging Face Spaces. Consider it because it does the same job with a different approach (open source).
ECC vs alternatives at a glance
| Tool | Pricing | Open source / licence | GitHub stars | Good for |
|---|---|---|---|---|
 ECC | Open source + cloud | Yes | 291,617 | writing code, building AI agents |
| AIOS | See site | no licence (the LICENSE file is empty) | 6,516 | controlling a computer, building AI agents |
| AWorld | Open source | Yes | 1,246 | building AI agents, research |
| Hermes Agent (Nous Research) | Open source | MIT | 257,588 | building AI agents, research |
| Agno | Open source + cloud | Apache License 2.0 | 42,917 | building AI agents, building multi-agent systems |
| Letta | Open source + cloud | Apache License 2.0 | 25,265 | building AI agents, memory for agents |
| Unreal Agent | Open source | Yes | 2,213 | coding in the terminal, automating workflows |
| Neuron AI | Open source | Yes | 2,160 | building AI agents, building multi-agent systems |
| tRPC-Agent-Go | Open source | Yes | 1,878 | automating workflows, building AI agents |
| BaseAI | See site | No | 1,290 | building AI agents, working with documents |
| IBM CUGA | Open source | Apache License 2.0 | 1,052 | building AI agents, research |
More: ECC listing · All frameworks tools · All alternatives pages
Alternatives are picked from directory data only: same category plus shared tasks and sub-tasks. Pricing is as each maker states it; GitHub stars as recorded on each listing.