Prerender vs Torbit: What are the differences?

Prerender: Allow your javascript apps to be crawled perfectly by search engines. Works for AngularJS, BackboneJS, EmberJS and more. Search engines and social networks are always trying to crawl your pages, but they only see the javascript tags...We render your javascript in a browser, save the static HTML, and you return that to the crawlers!; Torbit: Next generation web performance with measurement, analytics and optimization. Torbit is a cloud-based website accelerator service that makes websites faster. Torbit speeds up your site by automating these performance optimizations that are otherwise tedious for you to do by hand.

Prerender belongs to "SEO for Javascript" category of the tech stack, while Torbit can be primarily classified under "Website Accelerator".

Some of the features offered by Prerender are:

• Open Source
• Perfect Cache
• Blazing Fast

On the other hand, Torbit provides the following key features:

• The metrics you care about- With performance data, itʼs important to look beyond averages since outliers are inevitable. Insight allows you to look at other key metrics such as your median and key percentiles (90th, 95th & 99th).
• Real visitor data- See a histogram showing the breakdown of your site speed and get a better sense of the typical experience for your visitors. With 100% sampling, youʼll get valuable performance data for every visitor on every page.
• Real time feedback- Did that latest code deployment make your website faster or slower? Is your server having capacity issues? By tracking your performance in real time, you can see how your speed changes and what your visitors are experiencing right now. With 1-second resolution, you have instant transparency into how your site is performing at any given moment.

Prerender is an open source tool with 5.19K GitHub stars and 767 GitHub forks. Here's a link to Prerender's open source repository on GitHub.