E2B alternatives

E2B is listed under Agents: Sandboxed cloud environments for AI agents to run code. We compare it with 15 other Agents tools that have researched data. 14 of them offer a free plan or are free to use (5 open source), and 1 are paid only. E2B itself is freemium (free plan + paid tiers).

Order: Sorted by how much you can use for free (free or open source first, then free plan with paid tiers, then paid only), then by the number of documented features, then alphabetically. No ratings or reviews are used.

Tool	Pricing	Free tier	Key features	Who it's for
E2B this tool	Freemium (free plan + paid tiers) Paid plans from $150/month	Yes	One Linux microVM per agent session with shell and browser Run sandboxes on E2B cloud or AWS, GCP, or Azure Run Python or JavaScript and return charts, tables, and images	Teams that build and run AI agents.
Omnara	Freemium (free plan + paid tiers) Platform fee $0; pay as you go for models and machines	Yes	Runs agents through one REST API, a TypeScript SDK, and a CLI Uses OpenAI, Anthropic, OpenRouter, LiteLLM, or a model you host Runs agents on sandboxes or on your own macOS or Linux machine	Teams who want to run production agents on their own models and machines.
Haystack	Free and open source	Yes	Wire retrieval, reasoning, memory, and tools into agent flows Plug in OpenAI, Anthropic, Mistral, Hugging Face, and vector databases Run serializable pipelines on Kubernetes with logging and monitoring	Teams and developers building LLM-powered agents and NLP applications.
Composio	Freemium (free plan + paid tiers)	Yes	Gives agents access to more than 1,500 apps Loads only the catalog actions a task needs Manages OAuth sign-in and per-account scopes	Developers and teams connecting AI agents and assistants to work apps.
Flowise	Freemium (free plan + paid tiers) Paid plans from $35/month	Yes	Build multi-agent systems with workflow orchestration across agents Build chatbots with tool calling and retrieval from data sources Let humans review tasks that agents perform	Developers and teams building AI agents and LLM workflows.
Modal	Freemium (free plan + paid tiers) Paid plans from $250/month	Yes	Serve language, image, video, and audio models live or in batch Run isolated sandboxes for coding agents and untrusted code Fine-tune models and run reinforcement learning on GPUs	For teams that develop, train, and serve AI applications at scale.
Docker Agentic Platform	Paid First $25 of compute included; then per-second rates	No	Predefined sandboxes for Claude Code, Codex, Gemini CLI, Copilot, and OpenCode Stores model API keys as secrets, never inside the sandbox Network policies decide what each sandbox can reach	—
Agensh	Free and open source	Yes	Agents discover and claim sub-tasks, share findings, verify results, and merge progress Runs without a central orchestrator, using a shared workspace, messages, and shared context Published experiments scale the harness to 1,024 agents	Engineers reproducing a self-organized multi-agent harness on one machine.
Harness²	Free and open source	Yes	Task-level recursion proposes edits, probes them on the same task, and composes a harness Harnessing-level recursion keeps adopted harnesses and lessons for the next task Eight editable parts: system prompt, guardrails, memory, tool guidance, subagents, skills, scripts, and plugins	Engineers refining an agent harness for tasks unseen when that harness was designed.
LearnHarness	Free and open source	Yes	Measures where understanding ends, then plans a dependency map from there to the goal Teaches one reasoning step at a time, then runs separate practice sessions Stores propositions and reasoning chains in a knowledge graph across sessions	People who want an agent to teach a subject from what they already understand.
OpenShell	Free and open source	Yes	Runs each agent in an isolated sandbox Confines files and system calls with kernel controls inside the sandbox Checks every network connection against policy before it leaves the sandbox	Teams that run fleets of autonomous agents and want policy on files, network, and credentials.
Agno	Freemium (free plan + paid tiers) Paid plans from $150/month	Yes	Build agents, teams, and workflows using 100+ toolkits Expose agents as a product API or MCP server Run the platform in any cloud, on-prem, or locally	Engineers and teams who build customer-facing and internal agents in their own cloud.
CrewAI	Freemium (free plan + paid tiers)	Yes	Ranks automations from tickets, chats, apps, and workflows Visual editor builds workflows and exports them to Python Traces LLM calls, tool calls, and memory reads with costs	Business teams, engineers, and platform teams that build and govern agents.
LangChain	Freemium (free plan + paid tiers)	Yes	Trace agent runs step by step and search traces fast Turn traces into datasets and score each agent step Deploy agents with persistent state and isolated code sandboxes	For individual developers and teams of any size building agents.
LlamaIndex	Freemium (free plan + paid tiers)	Yes	Parse PDFs, Office files, spreadsheets, and images Extract tables, charts, and handwritten text into structure Pull defined fields from documents without model training	Developers and document-heavy teams in finance, insurance, manufacturing, and healthcare.
Mastra	Freemium (free plan + paid tiers) Paid plans from $250/month	Yes	Define typed agents with instructions, models, and tools Compose multi-step workflows with retries and branches Store context using observational memory and semantic recall	Developers and teams building AI agents and applications in TypeScript.

E2B alternatives: FAQ

What are the best E2B alternatives?

Omnara, Haystack, Composio, Flowise, Modal, Docker Agentic Platform, Agensh, Harness², LearnHarness, OpenShell, Agno, CrewAI, LangChain, LlamaIndex, Mastra are the E2B alternatives in our directory that have researched data. They are ordered by how much you can use for free, then by documented features. No ratings or reviews are used, so the order is not a quality ranking.

Is there a free alternative to E2B?

Omnara (freemium (free plan + paid tiers)), Haystack (free and open source), Composio (freemium (free plan + paid tiers)), Flowise (freemium (free plan + paid tiers)), Modal (freemium (free plan + paid tiers)), Agensh (free and open source), Harness² (free and open source), LearnHarness (free and open source), OpenShell (free and open source), Agno (freemium (free plan + paid tiers)), CrewAI (freemium (free plan + paid tiers)), LangChain (freemium (free plan + paid tiers)), LlamaIndex (freemium (free plan + paid tiers)), Mastra (freemium (free plan + paid tiers)). Free tiers can change, so check each site.