Software Alternatives, Accelerators & Startups

Unleash VS Calibre Web

Compare Unleash VS Calibre Web and see what are their differences

Unleash logo Unleash

Open source Feature toggle/flag service. Helps developers decrease their time-to-market and to increase learning through experimentation.

Calibre Web logo Calibre Web

Calibre Web is a web app providing a clean interface for browsing, reading and downloading eBooks...
  • Unleash Landing page
    Landing page //
    2021-06-12

Why Unleash?

  • Highly flexible platform - extend or integrate through our extensive APIs
  • Run where you need. Self-hosted or SaaS
  • Extend to support any use case
  • Secure - user data never shared with our server
  • Resilient protocol

Why feature management?

  • Reduce risk when shipping new feature to production through Canary release
  • Enable the new release to a targeted set of users
  • Deploy A/B testing on your new feature
  • Controlled system degrade in case of issues within milliseconds
  • Calibre Web Landing page
    Landing page //
    2023-09-26

Unleash

$ Details
freemium $80.0 / Monthly (Pro, "5 users")
Platforms
Linux JavaScript Java .Net Go Elixir Python Ruby
Release Date
2019 January

Calibre Web

Website
github.com
Pricing URL
-
$ Details
Platforms
-
Release Date
-

Unleash videos

Unleash getting started

Calibre Web videos

Calibre Web

Category Popularity

0-100% (relative to Unleash and Calibre Web)
Developer Tools
100 100%
0% 0
eBook Reader
0 0%
100% 100
Feature Flags
100 100%
0% 0
Ebooks
0 0%
100% 100

User comments

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Reviews

These are some of the external sources and on-site user reviews we've used to compare Unleash and Calibre Web

Unleash Reviews

The 8 best free and open-source feature flag services
BlogBackSign inBlogThe 8 best free and open-source feature flag servicesPosted byThe best open-source feature flag tools1. PostHogWhat is PostHog?Supported librariesHow much does it cost?2. UnleashWhat is Unleash?Supported SDKsHow much does it cost?3. GrowthBookWhat is GrowthBook?Supported SDKsHow much does it cost?4. FlagsmithWhat is Flagsmith?Supported SDKsHow much does it...
Source: posthog.com

Calibre Web Reviews

We have no reviews of Calibre Web yet.
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Social recommendations and mentions

Based on our record, Calibre Web seems to be a lot more popular than Unleash. While we know about 85 links to Calibre Web, we've tracked only 4 mentions of Unleash. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

Unleash mentions (4)

  • KILLSWITCH
    So my first instinct is to setup some sorta feature-flag thing within a CMS so managers can flip the boolean, I'm exploring getunleash.io and GrowthBook.io and we already use Contentful.com within the app but they're saying they "really don't think we need to use any third party thing for a killswitch"... Source: 12 months ago
  • Need your opinion
    We are an Open Source Feature Flagging solution called Unleash, and we are looking to get some feedback from the community on a decision we are trying to make. We are considering offering our developers the option to either write technical content through a Community Content Program for us for a $200 fee, or to donate that amount to charity. Source: over 1 year ago
  • How we use analytics as a privacy focused OSS company
    TLDR: Privacy is really important for us at Unleash. Here you will find the full story on how we ended up with an analytics solution that does not collect personal data and has very short retention. Whenever we evaluate a new feature at Unleash, we always start with one question. How does this fit with our values? This question is powerful. It can quickly qualify or disqualify a feature from consideration, putting... - Source: dev.to / almost 2 years ago
  • Best A/B testing, experimentation platform for Mobile
    Have seen Unleash used: getunleash.io and people seemed happy with it. Source: almost 3 years ago

Calibre Web mentions (85)

  • Ebooks
    There are already some very good ebooks solutions out there so there's really no need. Calibre for the backend and database management, Calibre-Web for the front end, and Openbooks for content. Source: 7 months ago
  • Kobo / Calibre-web / ePubs - how nice do they play?
    I have a carefully-curated calibre-web library that is 100% epubs. I have a kindle to which I usually send books from calibre-web with the 'send to e-reader' button, and it works great. Source: 7 months ago
  • Calibre – New in Calibre 7.0
    Worthy of note the Calibre-Web[0] project, which builds atop Calibre library to provide powerful web interface. The project and its maintainer deserve some love and support. [0] https://github.com/janeczku/calibre-web. - Source: Hacker News / 7 months ago
  • $79 Raspberry Pi Alternative Comes with Built-in Touch Screen
    A pihole, of course. A backup script runner. An eink dashboard.. A book server. Source: about 1 year ago
  • Adding a <script> to calibre web?
    Calibre-web or the built in Calibre Content Server? Are you using a reverse proxy? Source: about 1 year ago
View more

What are some alternatives?

When comparing Unleash and Calibre Web, you can also consider the following products

LaunchDarkly - LaunchDarkly is a powerful development tool which allows software developers to roll out updates and new features.

calibre - Ebook manager, viewer & converter

ConfigCat - ConfigCat is a developer-centric feature flag service with unlimited team size, awesome support, and a reasonable price tag.

Amazon Kindle - Amazon Kindle software lets you read ebooks on your Kindle, iPhone, iPad, PC, Mac, BlackBerry, and...

Flagsmith - Flagsmith lets you manage feature flags and remote config across web, mobile and server side applications. Deliver true Continuous Integration. Get builds out faster. Control who has access to new features. We're Open Source.

FBReader - FBReader is an e-book reader for various platforms. Features: