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A Python and R IDE that pairs script and notebook editing with live data exploration tools.

A tagged visual-reference library built around local folders

A cross-platform hierarchical note manager with rich text, attachments, tasks, and reminders.

Collaborative data workspace for notebooks, apps and dashboards

Arrange notes in notebooks, sections, and pages for classes, projects, or reference material.

Code passages and compare qualitative text analysis

A free Android Markdown notebook for notes, task lists, reminders, and attachments.

Collect notes, web research, tasks, and reference material in a searchable workspace.

A hosted notebook editor for Python and data work, with SQL cells, collaboration, and interactive reports.

A Windows personal information manager for capturing and retrieving notes, files, links, and web snippets.

Arrange notes and long-form writing in nested books that can grow into projects.

A desktop note environment for Markdown, source files, mind maps, PDFs, and other formats.

An iPhone and iPad notebook for handwriting, PDF markup, audio notes, and searchable study material.

AI-native business intelligence for ad hoc analysis, dashboards, and data workflows.

Coding exercises for data and machine-learning study

Explore portfolio weights with explicit return, risk and constraint choices

Visualize workflows and portfolio dependencies with Kanban, timelines, and flow metrics.

Collect Markdown notes in folders and tags, then search or browse them in a feed.

Coordinate distributed applications with naming, configuration, synchronization, and group-service primitives.

A zoomable handwriting and planning notebook with sub-pages and document annotation.

Structure team messages with nested channels, asynchronous discussions, and deep integrations.

Configure wiki pages with revision history, structured navigation, and fine-grained permissions.

A project platform for WBS plans, Gantt schedules, resource allocation, Scrum, and Kanban.

Personal accounts with detailed categories and cash-flow charts