Lightweight browser sandbox for lag-free pair dev environments.
Remote developers are frustrated with laggy real-time code collaboration tools that make pair programming sessions unproductive.
DevDuet runs shared code sandboxes in-browser with minimal state sync, eliminating setup lag and env diffs. Pairs edit in isolated VMs that sync only runtime state and code. Includes voice notes for async handoffs.
Remote software developers in distributed teams who regularly conduct pair programming sessions
Browser-native sandboxes sync <100B state, far lighter than full IDE replication.
supportive
In-browser Node/Web VM for code run.
Sync only deps, state, output diffs.
Shared app preview pane with hot reload.
Record audio clips tied to code changes.
Pre-configured stacks (React/Node/etc).
Collaborative file explorer.
Shared console logs/errors.
10+ starter boilerplates.
Zip full env for local download.
| Column | Type | Nullable |
|---|---|---|
| id | uuid | No |
| text | No |
| Column | Type | Nullable |
|---|---|---|
| id | uuid | No |
| owner_id | uuid | No |
| preset_id | int | No |
| state_hash | text | Yes |
Relationships:
| Column | Type | Nullable |
|---|---|---|
| id | uuid | No |
| duet_id | uuid | No |
| audio_url | text | No |
| timestamp | timestamp | No |
Relationships:
/api/duetsCreate duet sandbox
/api/duets/:id/stateUpdate state hash
/api/duets/:id/notesUpload voice note
/api/duets/:idLoad duet config
No voice
Solo
5 users
| Month | Users | Conversion | MRR | ARR |
|---|---|---|---|---|
| Month 1 | 180 | 2% | $72 | $864 |
| Month 6 | 1,400 | 4% | $1,120 | $13,440 |
Lightweight browser envs erase setup lag for remote duets.
Target indie hackers building side projects via Twitter searches, offer free Pro for case study shoutouts, follow up via email sequences.
Popular for demos
Heavy multi-user sync
Ultra-light state sync
Fast boot
Limited pair features
Voice + duet focus
Preset library grows with user contributions, network effects in shared templates.
WebContainers maturity enables true browser-native dev, remote-first teams need it.
Browser VM limits
Node/Web focus
Scope creep on stacks
Limit to 10 presets
Success: 50 responses
Success: 200 referrals
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