What's New in ConfigSync: 2026 Year in Review
Everything we shipped in 2026: content-hash caching, parallel operations, watch mode, selective sync, diff command, lifecycle hooks, and 24 built-in modules.
A Year of Building
When we started 2026, ConfigSync was a simple tool that synced dotfiles with encryption. Twelve months later, it is a complete development environment management platform with 24 modules, a web dashboard, enterprise features, and a growing plugin ecosystem. Here is everything we shipped.
Performance: Content-Hash Caching and Parallel Operations
Early in 2026, we focused on making ConfigSync fast. Two changes made the biggest difference.
Content-hash caching means ConfigSync only uploads files that actually changed. Before this, every push uploaded every tracked file. Now it computes a SHA-256 hash of each file and compares it to the last pushed hash. If nothing changed, nothing uploads. This reduced typical push times by 80% for incremental syncs.
Parallel operations allow multiple modules to capture and restore simultaneously. Shell, git, and SSH modules no longer wait for each other. On machines with many modules enabled, restore times dropped by 60%.
Watch Mode
Watch mode was one of the most requested features. Instead of manually pushing after every change, watch mode monitors your tracked files and automatically pushes when they change.
Watch mode works in both directions. It pushes local changes and pulls remote changes, keeping all your machines in sync in near real-time.
Selective Sync and the Diff Command
Two related features that give you more control over what syncs and when.
Selective sync lets you push or pull specific modules or files instead of everything. This is useful when you want to update your SSH config without touching your editor settings.
The diff command shows exactly what changed between your local state and the remote snapshot, so you can review changes before pulling.
Lifecycle Hooks
Hooks let you run custom scripts at key points in the sync lifecycle. The most popular use case is running brew bundle after a pull to install new packages.
| Hook | Runs When | Common Use |
|---|---|---|
| pre-push | Before pushing | Run tests, export conda env |
| post-push | After pushing | Notify team, update docs |
| pre-pull | Before pulling | Backup current state |
| post-pull | After pulling | brew bundle, restart services |
Bootstrap Scripts and the Setup Command
The configsync setup command and bootstrap scripts turned ConfigSync from a sync tool into a complete machine provisioning system. A single URL with an embedded token installs ConfigSync, authenticates, pulls your environment, and runs your bootstrap script.
24 Built-In Modules
We shipped modules throughout 2026, ending the year with 24 built-in modules covering the most common developer tools:
| Category | Modules |
|---|---|
| Shells | zsh, bash, fish |
| Editors | VS Code, Neovim, Vim, JetBrains |
| Version Control | git, GitHub CLI |
| Security | SSH, GPG, AWS credentials |
| Package Managers | Homebrew, npm, pip, cargo |
| Containers | Docker |
| System | macOS defaults, Raycast, Ghostty |
| AI Tools | Cursor, Claude Code |
Snapshot History and the Web Dashboard
The web dashboard at configsync.dev launched with machine management, API token management, and snapshot history. You can see every sync event, manage which machines have access, and generate setup URLs for new machines.
Snapshot history turned ConfigSync into more than a sync tool. It became an audit trail and a backup system. Every push is a timestamped record of your environment that you can roll back to at any time.
What Is Planned for 2027
Looking ahead, we are working on several major features:
- Team sharing and RBAC for organizations that need to share configurations with access controls.
- Plugin marketplace where community-contributed plugins can be discovered and installed.
- Conflict resolution for cases where two machines modify the same file between syncs.
- Linux desktop support with modules for GNOME, KDE, and i3/sway configuration.
- Mobile companion app for generating setup tokens and monitoring sync status from your phone.
2026 was about building the foundation. 2027 is about scaling ConfigSync from a personal productivity tool to a team platform. Thank you to everyone who used ConfigSync this year, reported bugs, requested features, and contributed plugins. The best is ahead.
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