There are 40 tools in this catalogue for reading, studying, citing and understanding. This guide is about how to narrow that down, not about which one is best — that depends on work only you can see.
What the catalogue actually holds
As of August 2026, the 40 listings in this category break down like this:
- 1 are free with no paid tier at all.
- 14 have a free tier alongside paid plans — worth checking what the free tier removes, because for several of them it is the thing you wanted.
- 25 are paid only, though most of those offer a trial.
Those numbers move. Tools in this space are launched and abandoned quickly, and every listing here is checked automatically for a site that still answers — the ones that stop answering are removed rather than left as dead links.
The mistake worth avoiding
Accepting a citation because it is formatted like one. Several tools in this category still produce references that look right and do not exist. Follow one before you rely on the tool.
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Decktopus AI
DesignDecktopus is an AI presentation maker, that will create amazing presentations in seconds. You only need to type the presentation title and your presentation is…
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Partner
Decktopus AI
DesignDecktopus is an AI presentation maker, that will create amazing presentations in seconds. You only need to type the presentation title and your presentation is…
We earn a commission if you sign up — at no extra cost to you.
What to check before you pay
Whether sources are linked and checkable, or only named.
Two more that apply to everything in this category: what happens to your work if you stop paying, and whether there is an export that another tool can read. Both are answered on the vendor's own pages, and both are the questions people wish they had asked.
Where to start looking
These are the most-viewed listings in this category on this site. That is a measure of what readers here look at — it is not a ranking, and it is not a recommendation:
- Alethea — ALETHIA AI is a research and development studio building at the intersection of two of the most transformative technologies of our time: Generative AI…
- Teacherbot — Create AI-powered quizzes in seconds. Run live games your class will beg to play again. Import your Kahoot quizzes. Free to get started.
- Gamma.ai — Gamma is an event driven security awareness training solution using its patent pending AI technology. It continuously monitors your employees and noti…
- Connected Papers — A unique, visual tool to help researchers and applied scientists find and explore papers relevant to their field of work.
- Sketchar — Project your sketches onto any surface with Sketchar's AR drawing app. Create murals, learn to draw, and join 12M artists. Free on iOS & Android.
- Aidaptive — Aidaptive - Adaptive AI solutions for modern businesses. Transform your business with intelligent AI that learns, adapts, and delivers results.
- The Simulation — An AI Simulation game - co-create the first truly intelligent AIs through your play with Reinforcement Learning from Human Feedback.
- Jua AI — Jua is training a foundation model of how reality behaves and the agent that acts inside it. State of the art on atmospheric prediction. In production…
How this guide was put together
The counts come from the catalogue as this page was generated, and the descriptions come from each vendor's own published summary. Nothing here is a hands-on test: where a judgement is offered above, it is offered as a judgement. How the catalogue is built sets out what is checked and what is not.
