Productivity Review

Readwise

Deep Dive Analysis

Readwise collects highlights from books, articles and podcasts and resurfaces them daily, syncing to note apps.

People who read a lot and forget most of it.

"Genuinely changes what you retain, if you keep the habit. Otherwise it is a subscription for nothing."

AI calendar that schedules your tasks.

Task management built around GTD.

Open-source outliner and knowledge base.

Public API

Offers a documented API you can build against.

Yes

Mobile app

Has a native app for iOS or Android, not just a mobile website.

Yes

Open source / self-hostable

Source is open and the tool can be run on your own infrastructure.

SSO (SAML)

Supports SAML single sign-on on at least one plan.

These are facts that can be checked, not opinions. Where we have not checked, it says so — we do not fill the gap with a guess.