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Evangelizing User Experience.

Epsilon Delta is a Mumbai based DPIIT recognized startup doing pioneering work in the field of user experience monitoring and improvement. The company has developed a real user monitoring and improvement tool called Gemini. Gemini is now being used by E-Commerce, Finance, Insurance aggregators and content sites.
The company also offers its Professional Services called Wizard to various clients, where it works on performance analysis and assistance in implementing various performance optimizations.


Wizard customers repeat us


Gemini customers renew subscription

The Founder

Mr. Swapnil Parulekar

Mr. Swapnil Parulekar, having more than 22+ years of experience, is the founder of Epsilon Delta. Over the course of years, he got the chance to work in Yahoo! for about nine years and innovate in the field of web performance. He spent close to three years in Quikr India as Director of Performance and Security, overlooking the function of speed and Cybersecurity for Quikr users. He calls himself the advocate of users for better speed. With this passion, he established Epsilon Delta.

Faster website is the best feature any product can offer to it's users

Tech Fellow

Mr. Prathamesh Rasam

Mr. Prathamesh Rasam is a techie by heart having 10+ years of experience of working on online user problems in Unicorns like Shaadi.com and Quikr.com. He has raised 2 bugs against Chrome browsers which were accepted and fixed by Google. Recently he contributed to the Web Almanac 2022 project by HTTP Archive. Prathamesh is a avid backpacker and likes to travel to remote and undiscovered places.

Always think of your users first

Our Journey To Growth

Epsilon Delta is a tech first company advocating the faster user experience in India.
Our aim is to make internet fast for the benefit of online community.

  • 2017 Inception
    • Company inception
    • First consulting client
  • 2018 Validation
    • First Gemini client
    • 1 Billion paid page inspections
    • Launch Ajax/resource tracking
  • 2019 Expansion
    • Launch of real time alerts and correlation
    • Represented in RISE & Nasscom
    • First international consulting customer
  • 2020 & 2021 Innovation
    • First international Gemini customer
    • Detection of javascript errors
    • Monitor Page waterfalls
    • Launch of Web bot detection & monitoring
  • 2022 Growth
    • Core web vitals alerts
    • 6 Billion Paid page inspection
    • First Fortune 500 Gemini customer
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7 Billion

Paid page inspections till date


Growth in annual traffic