
Sumatra PDF
Evince
calibre
MuPDF
Adobe Reader
FBReader
PDF-XChange Editor
Okular is a universal document viewer based developed by KDE.

MongoDB
Redis
ArangoDB
CouchDB
Apache Cassandra
OrientDB
Azure Cosmos DB
Document-Oriented NoSQL Database

Which is more popular?
Based on our record, Okular seems to be a lot more popular than CouchBase. While we know about 44 links to Okular, we've tracked only 3 mentions of CouchBase.
Website, pricing, platforms and company facts side by side.
|
|
|
|
|---|---|---|
| Website | okular.kde.org | couchbase.com |
| Pricing | — | |
| Listed in |
What each product offers, as listed by its team.


Possible disadvantages
Possible disadvantages
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
Okular is recommended for students, educators, professionals, and any users who require a reliable and feature-rich document viewer capable of handling a wide range of file formats. It is particularly beneficial for those who value open-source software and need robust annotation and document management tools across different platforms.
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
okular, program for annotating your books in linux
More videos
Couchbase on Why Every Enterprise Should Be Looking to Leverage Database Technologies
More videos
How often each product is chosen within a category, 0–100% relative to the other.


Share your experience with using Okular and CouchBase. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


Verdict: Okular is an open source and can be used free, which is probably its main advantage. At the same time, its basic functionality is meant to be not only highly competitive with PDF Expert but rather overcomes...
Okular is another open-source and cross-platform document viewer developed by KDE and is shipped as part of the KDE Application release.
Couchbase is an open source, NoSQL document-oriented engagement database, and distributed server that’s designed to support today’s mission-critical apps. The open-source platform runs natively on-device and manages...
The Couchbase APIs use JSON based schemas, peer-to-peer cloud syncing, and distributed ACID transactions. With geo-aware clustering and a distributed cloud-to-edge architecture, Couchbase provides reliable and...
CouchBase is another database engine to consider. While being a document based database, CouchBase offers the N1QL language which has SQL look and feel.
Recommendations tracked on public social media and blogs since March 2021.


If you mean signing as in "signing with your handwritten signature", you could use Okular () which easily allows you to do that. Filling out forms also works nicely. Source: almost 3 years ago
I was in a similar position lately until I found Okular. Have you tried it? https://okular.kde.org/. - Source: Hacker News / about 3 years ago
I would try Okular first, though, which is free and open source: https://okular.kde.org/. Source: over 3 years ago
I used a mix of tools to build this project, each handling a different part of the process. Google ADK helps run the AI agents, Couchbase stores past Kubecon talks data and performs the vector search, and Nebius Embedding model for... - Source: dev.to / over 1 year ago
It is therefor with great satisfaction we hereby announce that we might sponsor your Open Source project with your own custom AI chatbot built on top of ChatGPT and our AI chatbot technology. To show you an example of how this might look... - Source: dev.to / over 3 years ago
I think the URL is linked from https://couchbase.com/ or cloud.couchbase.com. Source: almost 5 years ago
When comparing Okular and CouchBase, you can also consider the following products.

Sumatra PDF is a slim PDF/DjVu/EPUB/XPS/CHM/CBR/CBZ/MOBI viewer for Windows.
Compare Sumatra PDF to Okular or CouchBase:

MongoDB (from "humongous") is a scalable, high-performance NoSQL database.
Compare MongoDB to Okular or CouchBase:

Evince is a document viewer for multiple document formats: PDF, Postscript, djvu, tiff, dvi, XPS...
Compare Evince to Okular or CouchBase:

Redis is an open source in-memory data structure project implementing a distributed, in-memory key-value database with optional durability.
Compare Redis to Okular or CouchBase:


A distributed open-source database with a flexible data model for documents, graphs, and key-values.
Compare ArangoDB to Okular or CouchBase: