Sidebar and navigation

The tree

• Hierarchical tree: Connections > Databases > Collections > Indexes, Schema, Validation, with lazy-loading expansion
• Collections sorted alphabetically within each database
• Instant search over the whole hierarchy. Matches auto-expand, the field reports how many matched, and clearing it restores the previous expansion state
• One click focuses a collection, a double-click opens it in a query tab
• The tree is one keyboard stop. Arrow keys move, expand, and collapse, Enter expands or collapses the focused row, Space opens a collection in a query tab, and Home and End go to the ends
• Refresh pulls a collection with its statistics and indexes. With nothing focused, the active query tab is the target

Hover previews

• Hover preview cards on connections: host, database and collection counts, data size, topology, auth method, transport security, and write-protection scope
• Hover preview cards on collections: document count, data size with average per doc, schema status, index count and size, and validator info
• Hover preview cards on databases, indexes, and schema nodes with their own relevant detail
• Previews follow the keyboard cursor as well as the pointer

Context menus and snippets

• Right-click context menus at every level, from create database and refresh down to rename, clear, and drop
• Pro context actions: Cluster Monitor, user management, database import, and database export
• Customizable snippets submenu. Add, remove, drag-to-reorder, and edit query templates, then star one as the default double-click query

Pinned, favorites and folders

• Pinned collections in a dedicated section, keeping the same context menu and hover preview as regular collections
• Favorite queries saved with Ctrl+Shift+S / Cmd+Shift+S. Preserves code, view type, chart config, table state, page size, and read preference
• Markdown notes can be saved as favorites too, and reopen as markdown tabs
• Folders for all three sections, nested to any depth, with rename in place and item count badges
• Deleting a folder returns its contents to the section root rather than deleting them

Drag and drop

• Drag-to-reorder connections, favorites, and folders with three-zone drop detection
• Drag a collection or database onto another destination to open a copy modal with it preselected (Pro)
• Only a destination the copy could actually use lights up: another connection, or another database on the same one

The panel itself

• Sticky headers keep connection and database rows visible while scrolling their descendants
• The active tab’s collection is marked in the tree, and a disconnected connection is dimmed
• Pin and favorite changes appear in every open Monghoul window
• The sidebar resizes and hides, with width, order, and expansion state persisted. Toggle with Ctrl+B / Cmd+B
• Reaching a Free capacity limit explains the Pro upgrade instead of failing quietly