These four tech stack that are mainly used in the GSoC Organizations:
⇒ Finding Organizations:
2 organizations are good but in case 3rd one your can according to situation
⇒ This time in January Pick up the Good and if possible the bigger issues and solves them..
⇒ Having the very polished proposal-
→ Before submitting the proposal to GSoC website ask for the feedback to your mentors.
→ try to aim for two to three proposal for two to three organizations and yah you can send multiple proposals to the same organizations..