Free certifications:

Software Engineering:

1/ @freeCodeCamp

2/ @TestAutomationU

Python, ML, DS, AI:

3/ @kaggle

4/ @CognitiveClass

5/ @CiscoNetAcad

6/ @DataFlairWS

English:

7/ @EFSET

Source: x.com/denicmarko/status/1842887611309822022