# Sharpen, UJET, Five9 & Vocalcom

> A field guide to four contact center software vendors chasing the same buyers from opposite directions. Vocalcom is the 1995 French dialer pioneer that its founder just bought back to build an AI-first product. Five9 is the reliability-obsessed veteran that crossed a billion dollars in revenue as a public company. Sharpen is the Indianapolis platform now stitched into a private-equity roll-up. UJET is the Google Cloud-native challenger raising money on the promise that AI, not headcount, runs the queue.

## Achievements

- Five9 surpassed $1 billion in annual revenue for the first time in 2024, up roughly 14% year over year.
- UJET raised a total of $231 million and became the exclusive OEM partner for Google Cloud AI in the contact center.
- Vocalcom's Hermes dialer has equipped more than 1,000 contact centers worldwide and repeatedly appeared in Gartner's Magic Quadrant.
- Sharpen became the platform anchor of a Teleo Capital roll-up after merging with Plum Voice and acquiring Ytel.

## Latest updates

- **2024-09** — UJET closed a $76 million Series D led by Sapphire Ventures and promoted Vasili Triant to co-CEO to push into the midmarket.
- **2024-12** — Five9 reported crossing $1 billion in annual revenue for the first time.
- **2025-01** — Anthony Dinis reacquired Vocalcom to rebuild it as an AI-first contact center platform.

## Links

- Website: https://www.five9.com

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Published by YesPress — https://yespress.io
Last updated: 2026-08-05