# Comparisons

How Sponge compares with Readwise Reader, Pocket, Instapaper, and Omnivore, and how to move a Readwise Reader library into Sponge.

- [Sponge vs Instapaper for AI agent research](https://sponge.computer/compare/instapaper): Instapaper’s export is a CSV of links without article text, highlights, or notes. Sponge keeps all three in a private library your own AI agent can research from.
- [Omnivore alternative after the 2024 shutdown](https://sponge.computer/compare/omnivore): Omnivore’s team joined ElevenLabs and its hosted data was erased after exports closed on November 30, 2024. The code is still open source; Sponge is a hosted alternative.
- [Sponge as a Pocket alternative after the shutdown](https://sponge.computer/compare/pocket): Pocket shut down on July 8, 2025 and its export window closed that October. For new saves, Sponge is a private library your AI agent can research from.
- [Sponge vs Readwise Reader for AI agent research](https://sponge.computer/compare/readwise-reader): Readwise Reader is a paid reading app for pages, feeds, newsletters, and video. Sponge is a private library of pages and PDFs your AI agent can cite.

## Migration guides

- [Move a Readwise Reader library to Sponge](https://sponge.computer/migrate/readwise-reader): List every saved document with the Reader API, then save each link to Sponge with a short script and re-create the highlights that still match.