Knapsack Pro
Speed up your tests with optimal test suite parallelisation.
Knapsack Pro launched on March 23, 2018 with 9 votes, #960 of 2,954 launches that month and more than 50% of that year's launches. The site was still online in September 2026, 8 years on.
What it does
Speed up your tests with optimal test suite parallelisation. Automatically distribute your Ruby tests evenly across CI nodes. Supported test runners RSpec, Minitest, Test::Unit, Cucumber, Spinach, Turnip. Knapsack Pro works with multiple CI providers like CircleCI, Travis-CI, Buildkite, Codeship, Heroku CI, Gitlab CI, SemaphoreCI, Jenkins and it works with other CI servers.
Split Ruby, JavaScript tests on parallel CI nodes to save time. Supported Ruby: RSpec, Minitest, Test::Unit, Cucumber, Spinach, Turnip. JavaScript: Cypress.io, Jest, Vitest, Playwright
The first 14 days are on us. Then pricing starts at $10/committer/month. Knapsack Pro creates a queue of test files sorted by execution times that is consumed in batches by each parallel CI node. The split is balanced regardless of varying runtimes, CI nodes boot time, failing or flaky tests. In case of network issues, Knapsack Pro automatically switches to Fallback Mode and splits your tests based on file names. In the unlikely scenario where some nodes switch to Fallback Mode, but others don't, some tests might be run on multiple CI nodes. Knapsack Pro parallelizes tests across CI nodes by example . This is useful when you have slow test files but don't want to manually split test…from knapsackpro.com
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