Telegram is one of the best secure messaging applications : BY Ritwick Ghoshal

Overall: Telegram has always been a great option for communication within our teams thanks to its simple integrations with different software development workflows through its various APIs. The bot API came in especially useful when we were trying to build a commit notification workflow for AWS Code Commit.

Pros: Telegram is one of the few messaging platforms that boasted end-to-end encryption before the big names like WhatsApp and Viber jumped on the bandwagon. Telegram has always been touted as the 'secure' messaging option and it lives up to its name. It also provides a great deal of useful integration features via its bot and channel APIs. Telegram has always been blazing fast, and has never lagged except during outages caused by malicious activity.
Cons: The theming community on Telegram has dropped off lately, with people having to create their own custom themes for Telegram. The secure nature of Telegram also tends to attract groups that aren't the best in terms of legal activity.
Alternatives Considered: Slack
Reasons for Choosing Telegram: Slack hides most of its useful features behind a paywall while Telegram is completely free.
Switched From: WhatsApp
Reasons for Switching to Telegram: One of the main reasons we switched was due to the lack of integration options that WhatsApp provided as opposed to Telegram which had many.

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