Fleet (JetBrains)

Lightweight IDE F Voice & Memory

Basic Information

  • Company/Brand: JetBrains
  • Country/Region: Czech Republic
  • Official Website: https://www.jetbrains.com/fleet/
  • Type: Lightweight IDE
  • Release Date: 2022 (Public Preview)
  • Status: Discontinued on December 22, 2025

Product Description

Fleet was JetBrains' attempt to create the next-generation lightweight IDE, aiming to combine the lightness of text editors with the intelligence of JetBrains IDEs. However, JetBrains announced the discontinuation of Fleet on December 22, 2025, citing overlapping positioning and insufficient value compared to the existing JetBrains IDE product line.

The core idea of Fleet was to serve as a tool that could seamlessly switch from a lightweight editor to a full IDE mode, supporting multiple programming languages and distributed collaboration.

Core Features/Characteristics (Discontinued)

  • Lightweight startup mode
  • On-demand switch to full IDE mode
  • JetBrains code intelligence
  • Multi-language support
  • Distributed collaborative editing
  • AI Assistant integration
  • Theme and interface customization

Reasons for Discontinuation

  1. Positioning Overlap: Having two general-purpose IDE families caused confusion and diverted JetBrains' focus
  2. Insufficient Value: Rebuilding the full capabilities of IntelliJ IDEs in Fleet did not create enough differentiation
  3. User Feedback: Existing JetBrains IDE users lacked sufficient reasons to migrate to Fleet
  4. Strategic Shift: AI agent-based development became the new direction

Successor Product: Air

  • Supports delegating tasks to multiple AI agents for concurrent execution
  • Entered public preview in March 2026
  • Currently supports macOS only, with Windows and Linux versions pending
  • Built on some technical experience from Fleet

Impact on Existing Users

  • Fleet will no longer be available for download after December 22, 2025
  • No further updates will be released
  • Some server-dependent features (e.g., AI Assistant) may gradually stop working
  • Users can continue using installed versions

Market Lessons

  • Balancing lightweight IDE vs full-featured IDE positioning is challenging
  • AI agent-based development may have more potential than traditional IDE models
  • Users are highly sensitive to migration costs of existing tools
  • Even large companies need to decisively abandon unsuccessful product lines

Relationship with OpenClaw

The discontinuation of Fleet and the launch of Air highlight the industry trend toward AI agent-based development, which aligns with OpenClaw's agent platform positioning. JetBrains' strategic shift from traditional IDEs to agent-based development environments validates the importance of AI agents in software development.