BoltsFramework/Bolts-Swift

Health v2 · maintenance only

Flags: no_license

Adoption not part of the score

1319 stars · 126 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

Bolts-Swift is a collection of low-level Swift libraries originally built by Parse and Facebook, best known for its complete futures/promises implementation called Tasks. Tasks represent asynchronous operation results and support chaining, composition, parallelism, and structured error handling without nested callbacks.

Use cases

• handle asynchronous operations in Swift without callback pyramids
• chain async tasks with composable error handling
• run parallel async operations and combine their results
• implement futures/promises pattern in iOS apps
• avoid blocking threads while waiting on async results

When to choose

• you maintain a legacy iOS/OS X codebase already using Bolts or Parse
• you want a lightweight, dependency-free futures/promises library for Swift
• you need task chaining that works with any threading model like dispatch queues or operation queues

When to avoid

• you are starting a new Swift project - Swift's built-in async/await and structured concurrency are the modern standard
• you need a broadly maintained library - development is minimal and the project is effectively in maintenance mode
• you need more than task concurrency - the library's other components were deprecated in favor of dedicated libraries

Facets

library · maturity maintenance

concurrency error-handling mobile-development developer-tools futures promises async-tasks swift-library parse ios macos swift

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