All your databases.
All your tools.
Zero tab-switching.
Mongrel brings 30+ database engines, terminals, Docker, Kubernetes, and an opt-in AI assistant into one continuous desktop workspace. Built by VisorCraft - maintainers of MongrelDB.
For Windows, macOS & Linux · Vast Compatibility · Free Trial
SELECT o.id, o.total, u.email, o.created_at FROM orders o JOIN users u ON u.id = o.user_id WHERE o.status = 'paid' AND o.created_at > '2026-06-01' ORDER BY o.created_at DESC LIMIT 20;
Every database you run, behind a single pane of glass.
Most engineers reach for a chain of disconnected tools - a client here, a terminal there, a container shell, an API checker. Mongrel brings them together so the context follows the question, all the way through.
Client, terminal, container, and HTTP in the same window - follow a row from query to cause.
Connections shared across the team - saved once, available everywhere, audit-logged end to end.
Index choices stay visible, attributable, and shared across the team - not locked in any single engineer's head.
Schema diffs become reversible migrations at the click of a button, every time.
Slow-query triage happens inside the workbench - no SSH hop, no grep, no guess.
AI runs proposal-only by default; production profiles inherit that - nothing executes without your approval.
One workbench for every database, every shell, every investigation.
Every engine, a shared query surface, a shared schema browser, a shared search. Centralize the knowledge that used to live in DMs.
Multi-engine workbench
Query, browse, edit, explain, profile, lint, visualize, compare, migrate, back up, restore, import, export, copy, and synchronize across every supported engine.
Visual query builder
Build SELECTs, JOINs, and aggregations visually. Output is real SQL - both sides stay editable, the planner stays honest.
Schema browser
ER diagrams auto-generated from foreign keys. Click any relationship to drill into rows, audit constraints, and verify integrity.
Search & history
Full-text search across every saved query, snippet, and run history. Find the query you wrote six months ago by its table name.
Snippets & templates
Team-shared snippets, parameters, query files. New hires ship their first working query on their first day.
Data catalog
Document tables inline. Descriptions, owners, freshness, lineage. Mongrel inherits what your team already knows.
30+ supported databases. Same workbench.
Connect to databases, clusters, and endpoints you already run.
Real debugging crosses tool boundaries.
Mongrel brings the surfaces around your database into the same window - terminals, file transfer, containers, API calls. Same session. Same state.
SSH / Mosh / Telnet
Remote terminals with logging, triggers, quick commands, guarded broadcast, themes, search, recording/replay, and AI-assisted summaries.
SFTP / SCP
Dual-pane file management over SSH profiles. Upload, download, recursive transfer, streaming progress, SCP fallback where SFTP isn't available.
Docker / Podman
Container, image, volume, network, logs, stats, file browser, lifecycle, pull-progress, exec. From the same session as your query.
Kubernetes
Workloads, pods, services, config, storage, RBAC, events, Helm, CRDs, YAML apply, metrics/logs, exec, debug containers, port-forwarding.
API client
HTTP/REST, GraphQL, WebSocket, and gRPC. Environments, secrets, auth, OAuth, mTLS, history, cURL/Postman/Insomnia import.
Investigation context
Hop from a row to the service that wrote it to the cluster it landed in. State survives the hop. The trail replays.
Every investigation becomes a shareable runbook.
Every Mongrel session is replayable, exportable, and shareable. Hand off the work, not the screen-grab.
In-app charts
Any result becomes a chart. Pivot, filter, group, save. No export-to-CSV-and-Excel detour.
Dashboards & notebooks
Lightweight dashboards pinned to a connection. Combine SQL, terminal snippets, and charts in a single view.
Shareable deep links
Hand someone the URL to the exact state of your investigation - connection, query, results, and trace.
Audit trail
Every investigation replayable. Every write gated. Every approval recorded. Compliance gets a happy path.
Plays well with the rest of your stack.
Git-backed Connection Sync
Sync connections, snippets, and runbooks through your own Git repo. Conflict resolution built in. Audit reporting free.
MCP servers
Connect MCP clients over local stdio or Streamable HTTP. Inspect tools, resources, prompts. Expose reviewed tools to chat under the same execution policy.
AI providers
Any OpenAI-compatible, Anthropic, or Gemini provider. Keys stored in your OS keychain. Per-profile automatic read-only actions. Production inherits proposal-only behavior.
Credentials stay where they should.
Mongrel is local-first by default. Production-safe by construction. Auditable on demand.
Local-first storage
Passwords and secrets live in the OS keychain. Optional master password encrypts secrets at rest. Exported profiles, API bundles, and sync payloads strip credentials by default.
Flexible connectivity
Direct, SSH tunnel, TLS bridge, or static IP. Private keys and known-hosts stay machine-local even when you sync connections across the team.
Access control
Per-connection write gates, reason prompts for risky queries, and audit log export for compliance reviews.
Proof, not promises.
Building MongrelDB
VisorCraft builds and open-sources MongrelDB, the encrypted local database engine that ships inside Mongrel for data security.
Learn more →OSS Maintainers
Free PDF editor, next-generation file search for Windows & Linux, diff/merge utility, and system monitoring tools - all publicly maintained in the open.
Learn more →No telemetry, ever
Mongrel does not call home and does not sell usage data. All AI calls are performed directly via your own providers and your own keys.
Learn more →Since 2014
We have over a decade of building and shipping developer tools right here in Texas. Never outsourced or offshored.
Discover your new favorite tool.
7-day free trial. No credit card. Connect to anything you already run.
Every database you run · macOS · Windows · Linux