--- title: "Best Crystal alternatives in 2026 (Crystal is deprecated) · Cork" description: "Stravu's Crystal was deprecated in February 2026. Alternatives as of October 2026: Nimbalyst, Claude Code worktrees, Sculptor, Conductor, Emdash, and Cork." canonical: "https://corkcli.com/blog/crystal-alternatives" last_updated: "2026-11-14" published: "2026-10-03" author: "Kevin Vera" --- # Best Crystal alternatives in 2026 (Crystal is deprecated) Stravu's Crystal was deprecated in February 2026. Alternatives as of October 2026: Nimbalyst, Claude Code worktrees, Sculptor, Conductor, Emdash, and Cork. By Kevin Vera · October 3, 2026 · [Alternatives](https://corkcli.com/blog/c/alternatives) · 6 min read Crystal, by Stravu, was a desktop app to "run multiple Codex and Claude Code AI sessions in parallel [git worktrees](https://corkcli.com/blog/git-worktrees-parallel-ai-coding-agents)," test and compare approaches, and merge the winners. It was MIT licensed, with builds for macOS, Linux and Windows. Crystal is deprecated. Its repository states that it "has been deprecated and replaced by Nimbalyst," with a deprecation date of February 2026, and the last release, 0.3.5 (February 26, 2026), says: "We recommend migrating to Nimbalyst, our successor product to Crystal. You may continue to use Crystal but it will not be updated in the future." That is the whole reason to look elsewhere: Crystal still runs, but it will not get fixes or support for new agent versions. ## The alternatives at a glance | Tool | Best for | Where it runs | Pricing as of October 2026 | |---|---|---|---| | Nimbalyst | The official successor, with the same worktree approach | Desktop (macOS, Windows, Linux) plus an iOS app | Free for individuals; Teams free during beta | | Claude Code `--worktree` | No new app at all | Your terminal | Included with paid Claude plans (Pro from $17/mo billed annually) | | [Sculptor](https://corkcli.com/blog/cork-vs-sculptor) | An open source research-preview app from Imbue | Mac (Apple Silicon) and Linux | Free (MIT); bring your own model plan | | [Conductor](https://corkcli.com/blog/cork-vs-conductor) | A polished Mac app for Claude Code, Codex and Cursor | Local workspaces on your Mac; cloud on paid plans | Free; Pro $50/mo; Teams $60/user/mo | | [Emdash](https://corkcli.com/blog/cork-vs-emdash) | Open source, cross-platform, many agents | Locally or over SSH | App free (Apache 2.0) | | Cork | Keeping parallel agents from colliding on shared code | Your machine, alongside your agents | Free (local, and 10 agent hours a month in the cloud); $20 a month per 100 agent hours, pooled | ## Nimbalyst Nimbalyst is the direct replacement and the one Stravu recommends. It describes itself as "the open-source visual workspace for building with Codex, Claude Code, and more." It keeps Crystal's core idea (any session can "opt into its own git worktree with one click") and adds visual editors for multiple file types and integrated task tracking. It supports Claude Code and Codex, with OpenCode and Copilot via ACP in alpha. The desktop and iOS apps are MIT licensed. Pricing: "Free for individuals," working with your existing Claude Code or Codex subscription or API key; Teams is free during beta. If you liked Crystal, start here. ## Claude Code worktrees, no app required If you used Crystal mainly to run several Claude Code sessions side by side, Claude Code now does that itself. `claude --worktree feature-auth` creates an isolated worktree under `.claude/worktrees/` on a new branch and starts Claude in it; run it again with another name in a second terminal for a parallel session. Subagents can get their own worktrees with `isolation: worktree`, and the desktop app has a worktree option when you start a session. You lose Crystal's side-by-side comparison UI but gain a setup with nothing extra to install. Comparison: https://corkcli.com/blog/cork-vs-git-worktrees ## Sculptor Sculptor, from Imbue, aims to "build product with grounded, parallel coding agents." Each workspace is an isolated worktree with its own branch and setup. It supports Claude Code and the Pi harness plus terminal-based agents, is MIT licensed, and runs on Apple Silicon Macs and Linux. Imbue labels it an "experimental research preview," so weigh that against Crystal's fate before standardizing on it. Comparison: https://corkcli.com/blog/cork-vs-sculptor ## Conductor Conductor runs "parallel Claude Code, Codex, and Cursor agents in isolated workspaces on your Mac." It is a commercial product with a free tier (local workspaces), Pro at $50 per month and Teams at $60 per user per month. It is the safest pick if you want a supported app and are on macOS, which Crystal users on Linux or Windows are not. Comparison: https://corkcli.com/blog/cork-vs-conductor ## Emdash Emdash is an Apache 2.0, YC-backed agentic development environment with builds for macOS, Windows and Linux. Each task runs in its own git worktree, it detects many agent CLIs (Claude Code, Codex, Cursor, OpenCode, Amp and more), and it can work over SSH. For Crystal users on Linux or Windows who want an open source app with more agents than Crystal supported, Emdash is the closest fit. Comparison: https://corkcli.com/blog/cork-vs-emdash ## Cork (the coordination layer) Cork is not a session manager: it has no diff viewer, terminal UI or editor, so it does not replace Crystal's app. It addresses the limit Crystal and every option above share. Worktrees stop agents from editing each other's files while they work, but the branches still meet when you merge or rebase, and that is where parallel sessions conflict. Cork is the [coordination layer](https://corkcli.com/blog/coordination-layer-ai-coding-agents) for multiplayer coding agents: it keeps Claude Code, Codex and Cursor agents, on one machine or across a team's machines, from overwriting each other on one codebase, and hands each agent what the others already learned. Cork's hooks run inside Claude Code, Codex and Cursor, whichever app or terminal launched them. Each agent is briefed on the signatures, callers and recent changes of the code it is about to touch. When another agent renames something yours depends on, your agent hears it on its next step, and [semantic lint](https://corkcli.com/blog/semantic-lint) turns that rename into a rule your agents are checked against. In a shared checkout, the write gate holds an edit against code another agent is changing right now. Landing turns `git push` into a rebase onto teammates' commits, a test run and a push. Crystal was built for one developer; Cork's paid plan also connects agents on teammates' machines. In Cork's benchmark (12 Claude Code agents at once on one repository, hard tasks), agents with Cork used 53% fewer tokens than the same agents without it. ``` curl -fsSL https://corkcli.com/install.sh | sh ``` Cork Free covers unlimited agents and repos on one machine with no account. In the cloud, Cork bills agent hours, not seats: 10 free a month per account, then $20 a month per 100, pooled across the workspace. Comparison: https://corkcli.com/blog/cork-vs-crystal ## How to choose - **You want Crystal, but maintained:** Nimbalyst. - **You want nothing new to install:** Claude Code's `--worktree` flag. - **You are on Linux or Windows:** Nimbalyst or Emdash (Conductor is Mac only; Sculptor has no Windows build). - **You want a commercial, supported Mac app:** Conductor. - **Your parallel sessions keep conflicting at merge time, or teammates run agents on the same repo:** add Cork underneath whichever you pick. ## Frequently asked questions ### Is Crystal still maintained? No. As of October 2026, the Crystal repository says it was deprecated in February 2026 and replaced by Nimbalyst. The last release was 0.3.5, and Stravu says it "will not be updated in the future." ### What replaced Crystal? Nimbalyst, Stravu's successor product. It keeps per-session git worktrees and adds visual editors, task tracking and an iOS app. ### Is Cork an alternative to Crystal? Partly. Cork does not run or display sessions, so for the app use Nimbalyst or another tool above. Cork keeps the agents those apps run aware of each other's changes so their branches still fit together. ## Sources - - - - - - - - - - ## Related reading - [Best Claude Code agent teams alternatives in 2026](https://corkcli.com/blog/claude-code-agent-teams-alternatives): Claude Code agent teams alternatives as of October 2026: subagents, worktrees, Conductor, GitButler, MCP Agent Mail, Multica, and Cork for coordination. - [Best Conductor alternatives in 2026: run parallel coding agents on any OS](https://corkcli.com/blog/conductor-alternatives): The best Conductor alternatives in 2026 for Windows, Linux and teams: Emdash, Orca, Superset, Sculptor and Cork, compared on platforms, agents and price. - [Best Vibe Kanban alternatives in 2026 (after bloop shut down)](https://corkcli.com/blog/vibe-kanban-alternatives): bloop, the company behind Vibe Kanban, shut down in April 2026. Alternatives as of October 2026: Conductor, Emdash, Orca, Superset, Multica, and Cork. - [Best Warp Oz alternatives in 2026](https://corkcli.com/blog/warp-oz-alternatives): Warp Oz alternatives compared as of October 2026: Cursor cloud agents, Claude Code cloud sessions, Codex, GitHub Copilot, Devin, and Cork for coordination. [All articles](https://corkcli.com/blog.md) · [Cork in Markdown](https://corkcli.com/index.md) · [llms.txt](https://corkcli.com/llms.txt) This page in HTML: https://corkcli.com/blog/crystal-alternatives