After enjoying Day 1, I was very excited for Day 2 of TossConf 25. This day was even more special because we were going to set up our own stall and interact with more people.
We got up early, took the bus, and reached St. Joseph’s College on time. The college team welcomed us with a nice breakfast. After eating, we moved to the auditorium to start the sessions.
1st Talk – Vijay Kumar Sir
Topic: Between Ethics and Exploitation – The Infinity War
He gave a deep and thoughtful talk about ethics in open-source.
He shared that he personally used open-source tools for many years but never contributed back, and this made him feel guilty
He admitted feeling guilty for not contributing earlier but said guilt can be a motivation to start helping the community.
His speech made many of us reflect on our role in open source.
2nd Talk – Yagapriyan
Topic: A Short History of Linux
This was a simple and interesting session on how Linux began.
He explained how Linux started from UNIX and became a major part of today's tech world.The talk was short but very informative.At the end, he asked a few questions and gave small gifts to the winners, making it fun.
Track Sessions - I joined Track 1
There were two parallel tracks with different talks. I attended Track 1 and listened to some great sessions.
Talk 1: – Keerthana Rajesh Kumar
Topic: Dissecting Ente – A Deep Dive into the Architecture
She explained the technical structure of a secure photo storage app called Ente.She showed where and how user photos are stored securely.
Used clear diagrams and explained complex parts in simple words.
I learned how apps manage memory and file storage safely.
Talk 2: – Abinaya SV
Topic: What’s Data Engineering? Your First Steps into Open Source
This was a beginner-friendly session on data engineering.She explained what data engineers do in real-time projects.She shared how to start learning data tools and contribute to open-source.
Her slides were very visual, with pictures and examples that made it easy to follow.
We Set Up Our Stall – F-Droid Stall
After the sessions, it was time for our stall!
Our stall name was F-Droid – an open-source app store for Android.There were 29+ stalls around us.I explained F-Droid to many students – how it works, why it's safe, and how it supports privacy.
I felt proud to be part of this and was happy that our stall was one among many amazing ones.
Xonotic Game
At one nearby stall, I learned about Xonotic, an open-source first-person shooting game.It runs smoothly even on low-end laptops.
I had never heard of it before, and I was surprised by how good it looked and performed.
Lunch Time – Biryani!!
Syed bro called us for lunch. We went to the canteen and had delicious biryani. It was a great meal and gave us energy for the rest of the day.
Track 2 – More Talks in the Afternoon
I joined Track 2 and attended more exciting sessions.
Talk 1: Bowrna Prabhakaran
Topic: A Day in the Open Source World
She shared her daily routine as an open-source contributor working with Tamil text tools.She talked about tools like DictPress, MNPhone, and KNPhone.She explained phonetic hash algorithms, used to help with Tamil typing and search.
It was inspiring to see how she contributes to the Tamil tech community.
Talk 2: Naveen Kumar
Topic: Speed It Up – Building Efficient Indexes in MongoDB
This was a technical but very easy-to-understand session about MongoDB indexing.He showed how to create indexes to make MongoDB faster.Explained the difference between single field and compound indexes.He used real-time examples and explained ESR rules clearly.
He ended with a quiz and gave a book to the winner.
Even though I didn’t know much about MongoDB, I understood his explanation very well.
Talk 3: Hari
Topic: Building Web with Batteries Included
He spoke about tools that help build websites quickly.He introduced tools like Builder and Prappy, which make web development easier.
His presentation was simple and smooth, great for people new to web building.
Final Talk – Achnandhi
Topic: What Does Open Really Mean in Open Source AI?
This was a very thoughtful talk about open-source and artificial intelligence.He said that many AI projects share code but do not share datasets.This makes the AI “not fully open”.
He explained how this affects transparency and the freedom to learn and improve AI.
Group Photo & Final Moments
After the final session, we all went to take a group photo. I spoke with many people, including Syed Jafer, Thanga Ayyanar, Mohamed Salman, and Mohan Sir.
We shared our experiences and took a moment to thank Payilagam and Muthuramalingam Sir for giving us this opportunity.
TossConf 25 was one of the biggest and most useful events I have attended. I learned many new things in simple Tamil, explored new tools, and gained real inspiration from open-source contributors.
I look forward to the next event—this time not just as a participant, but maybe as a volunteer and speaker too.
Thank you for reading my blog!
See you in the next event. Have a great day!!
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