Candidate testing
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- abcI assessment by Harald Ackerschott GmbH
- Adaface
- AdaptiLab
- Affintus
- Alva Labs
- Arctic Shores
- Aspiring Minds
- Assessio
- BrainsFirst
- Bryq
- Bubblesort
- Buzz
- Byteboard
- Caliper
- Caliper.ai
- Canditech
- Cangrade
- Career.Place
- Central Test
- ClassMarker
- CodePair
- CoderPad Live
- CoderPad Take-Home
- CodeScreen
- CodeSignal
- CodeSubmit
- Codility
- Codility: CodeLive
- Correlation One
- Criteria Corp