blessed

What it is

Blessed is a curses-like library that allows developers to create rich, interactive terminal user interfaces using JavaScript and Node.js. It's particularly useful for creating command-line applications with complex UI elements like forms, lists, and buttons.

Blessed stands out as one of the most feature-rich libraries for building complex, interactive terminal UIs in Node.js, offering a wide range of customizable components and event-driven interactions.

When it fits — and when it doesn’t

Known weaknesses

Each one links to the public issue, changelog or docs page it came from, where we have one.

1. 01

   Steep learning curve for developers unfamiliar with curses-like libraries

   Blessed's API and event-driven architecture require a deep understanding of terminal UI concepts.

2. 02

   Limited documentation and community support

   The official documentation is sparse, and the community around Blessed is relatively small compared to other JavaScript libraries.

3. 03

   Performance issues with complex UIs

   Rendering complex terminal user interfaces can lead to performance bottlenecks, especially on less powerful machines or in real-time applications.

What it does well

• Supports rich terminal UI elements like forms, lists, and buttons.

• Highly customizable with theming support.

• Event-driven architecture for interactive applications.

Pricing

Free tier

YesOpen source — free to use

Paid from

$0

Model

Flat rate

Enterprise plan

No

Pricing not independently confirmed — check the vendor’s page.