Patcher is a web workspace for Eurorack musicians who want one place to browse modules, document patches, plan racks, track a collection, and share selected work publicly.
- What is Patcher?
- Getting Started
- Navigation
- Modules
- Patches
- Racks
- Your Profile & Account
- Privacy & Data
- Tips & Best Practices
- Community & Support
- Quick Reference
Patcher helps you manage the full modular workflow:
- Browse modules in a free public database
- Build a personal collection of the modules you own
- Create patches with connection graphs, notes, tags, and sharing controls
- Plan racks with layout tools, HP totals, and power/balance analysis
- Share publicly with public patches, public racks, and an optional public profile
You do not need an account to browse modules, public patches, public racks, or manufacturer pages.
- Collection: your module library. It records which modules you own.
- Patch: a wiring diagram built from modules in your collection.
- Rack: a visual layout of modules in physical space, with HP and power analysis.
These are related, but they are not the same thing. Patches are documented from your collection and remain valid even if you later rearrange or delete a rack. Racks help you plan or reference physical layouts; patches capture how modules are connected.
You can start by exploring:
- Modules for the public hardware database
- Patches for public patch examples
- Racks for public rack layouts
- Manufacturers for maker-specific browsing
- Visit patcher.xyz.
- Click Sign up when you want to save your own collection, patches, or racks.
- Create an account with your email address and password.
- After signing in, use My profile in the toolbar to open your personal workspace.
Good to know:
- Browsing public content does not require login.
- Submitting new modules requires login.
- The toolbar also shows your username as a separate link to account settings.
The main toolbar gives you direct access to:
- Home: overview and entry point
- Modules: module database and module discovery
- Racks: public rack browser
- Patches: public patch browser
- Manufacturers: manufacturer browser
- My profile: your personal workspace after signing in
- Your username: account-management page after signing in
The module browser is the main place to discover hardware.
You can:
- Search by name and description
- Filter by manufacturer
- Filter by HP with comparison operators
- Filter by format standard (3U Eurorack, Intellijel 1U, Pulp Logic 1U)
- Filter by tags
- Change sort order
- Reset filters at any time
Each module detail page can include:
- Manufacturer and standard information
- Panel gallery with multiple panel variants
- HP, depth, and weight when available
- Power requirements for +12V, -12V, and +5V
- Inputs, outputs, total jack count, and connectivity density
- Manual link when a manual URL is available
- Store link when a direct buy URL is available
- Related public patches and racks using that module
- Comments and discussion
- External search shortcuts for wider research
Patcher's module data is community-shaped:
- Tags can be voted on
- Signed-in users can suggest additional tags
- Signed-in users can submit a new module
- Signed-in users viewing a module can use Submit similar to start a prefilled submission
- Users can report issues on module entries
- Open My profile.
- Go to your Patches section.
- Click Create patch.
- Add a name, description, and tags.
- Add modules from your collection and document the connections between them.
How patching works: patches are built from your collection in the patch editor. Racks are planned separately, so a patch stays editable even if a rack changes later.
Patch detail pages can include:
- Patch name, description, author, and timestamps
- A connection list
- A connection graph
- Patch statistics, including:
- cables
- unique module types
- multiples (one output feeding multiple inputs)
- average cables per unique module type
- annotated connections
- A Modules needed summary when the patch uses repeated modules
- Comments and discussion
If a patch uses the same module more than once, the patch editor shows numbered labels such as (1) and (2). These labels help you tell one copy from another while wiring.
- One copy: one card, no number
- Two or more copies: numbered cards so you can wire each copy separately
- Add Copy: creates another copy inside the patch only
- Important: adding a copy does not change your collection; it only affects this patch
Patch owners can:
- Edit patch metadata and tags
- Keep working on connections in the patch editor
- Copy a shareable link
- Switch the patch between public and private
- Delete the patch
Privacy note: private patches are hidden from public browse and search surfaces.
- Open My profile.
- Go to your Racks section.
- Click Create rack.
- Set the rack name and basic size details.
- Add modules and arrange them visually.
Rack detail pages combine a summary view with the editor:
- Rack preview and summary stats
- HP tracking
- Power totals
- Balance analysis
- Comments
- Downloadable rack image export (
.jpeg)
When you are editing your own rack, Patcher also exposes:
- Drag-and-drop layout editing
- Quick Edit rack / Lock rack switching
- Optional panel-image view
- Optional reduced-scale view
- Analysis modes for power, function, and signal
- Update preview to refresh the rack's stored preview image
On desktop, right-click a module in an editable rack. On touch devices, select a module to open its actions.
Available actions include:
- Inspect panel
- Switch Panel for modules with multiple panel variants
- Duplicate
- Replace with blank for spacing
- Delete from rack
- Delete all in row
Rack owners can:
- Toggle rack visibility between public and private
- Delete a rack while it is in editable mode
Any signed-in user can:
- Duplicate an existing rack into their own workspace
Privacy note: private racks are hidden from search, but anyone with the direct URL can still open them.
Open My profile in the toolbar to reach your signed-in workspace.
Your profile workspace includes:
- Modules: your collection, plus quick actions to add modules or submit a new one
- Racks: the racks you manage
- Patches: the patches you manage
- Profile stats
- Contributor stats
- Manuals
- Comments
- A floating search box to search across your modules, racks, and patches
From My profile, you can:
- Make your profile public or private
- Open your public profile page
- Copy your public profile link
Click your username in the toolbar to open account settings.
That page includes:
- Logout
- Your email address
- Linked sign-in providers
- Password change for email/password accounts
- Delete my data: removes your patches, racks, collection, and comments but keeps the account
- Delete my account: permanently removes the account and all associated data
- The module database is public and free to browse.
- Profiles can be public or private.
- Patches can be public or private.
- Racks can be public or private.
- Private patches and racks are hidden from public browse and search surfaces.
- You control the visibility of what you publish.
- Data exports are handled manually through support requests on Discord.
- You can either delete your content while keeping the account, or delete the account entirely.
- Authentication is handled through Supabase.
- In production, Patcher uses Sentry for error tracking, performance monitoring, and session replay.
- Patcher does not sell user data to third parties.
- Combine name, description, manufacturer, and tag filters for faster results.
- Check manuals and store links when they are available.
- Use tag voting and related racks/patches to discover alternatives.
- When a patch uses multiple copies of the same module, look at the numbered labels like (1) and (2) before adding or removing a copy.
- Add Copy creates another copy inside the patch only. It does not change your collection.
- A module needs recorded inputs and outputs in Patcher before there is anything to wire in the patch editor. If something seems incomplete, open the module page and report the issue.
- Add tags early so patches stay easy to find later.
- Use the connection graph and statistics together to spot complexity quickly.
- Leave some HP and power headroom for future changes.
- Use Replace with blank when you want spacing without guessing sizes later.
- Check both the rack totals and the balance-analysis panel before committing to a layout.
- Discord: best place for questions, feedback, feature discussion, and manual data-export requests
- GitHub Issues: best place for technical bug reports and reproducible problems
- Report incorrect module data
- Submit missing modules
- Share public patches and racks
- Open issues or pull requests if you want to help with development
Useful links:
Q: Is Patcher free to use?
A: Yes. The public module database and core product features are free to use today.
Q: Can I use Patcher without an account?
A: Yes. You can browse modules, manufacturers, public patches, and public racks without signing in.
Q: How do I add a missing module?
A: Sign in and use Submit a new module, or join Discord if you need help first.
Q: Can I export my data?
A: Yes, through a manual support request on Discord.
Q: What formats are supported?
A: 3U Eurorack, Intellijel 1U, and Pulp Logic 1U.
Q: Is there a mobile app?
A: Patcher is currently a web app that works in mobile browsers, with the most comfortable editing flows on larger screens.
Last updated: May 2026
For technical documentation and contributor setup, see the README.