A MongoDB GUI for documents, pipelines, and shell work.
SQL-style query translation, aggregation pipelines, Mongo Shell, document browsing and editing, schema and index panels, CDC, explain, and backups - native support in every Mongrel build.
Built into every Mongrel build · replica sets · Atlas
The pipeline Mongrel would inspect for you.
Click any stage to see documents examined, execution time, and what Mongrel would suggest. Same view you get inside the workbench.
// $match · status + createdAt
Full collection scan: 412,918 documents examined, 6,120 returned (1.5% selectivity). Proposed index would turn this into an IXSCAN over ~6k keys.
// orders · rs-prod-0 db.orders.aggregate([ { $match: { status: "paid", createdAt: { $gte: ISODate("2026-06-01") } } }, { $lookup: { from: "customers", localField: "customerId", foreignField: "_id", as: "customer" } }, { $unwind: "$items" }, { $sort: { createdAt: -1 } }, { $limit: 20 } ]); // 1.58s · 412,918 docs examined (COLLSCAN) // ✓ Proposal: compound index on { status, createdAt } db.orders.createIndex({ status: 1, createdAt: -1 });
What Mongrel ships for MongoDB.
SQL-style query translation
Write familiar SELECT-style queries against collections. Mongrel compiles them to native find operations.
Aggregation pipeline builder
Compose $match, $lookup, $group, and $facet stages visually. Preview documents at every stage boundary.
Pipeline explain & profiler
Per-stage executionStats: docs examined, time spent, COLLSCAN vs IXSCAN. Spot the stage that eats the budget.
Document browsing & editing
Tree, table, and raw JSON views. Edit nested fields and arrays in place with BSON-aware type handling.
Integrated Mongo Shell
A mongosh-style shell with autocomplete and history. Script output opens as a browsable result grid.
Schema & index management
Infer schema from sampled documents, manage indexes, and see which pipelines would benefit from a new key.
Change streams & CDC
Watch change streams live with operation-type filters, full-document payloads, and resume tokens.
Backups & restore
Scheduled backups in Mongrel Archive or Compass JSON formats, with restore into replica sets and Atlas clusters.
Roles, users & AI assist
Browse roles and privileges, plus an opt-in assistant that explains pipelines and proposes indexes.