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Siddhartha Varma • Peerlist

Kwibo is a sleek, free, zero-login GST bill generator designed for Indian shops, traders, freelancers, and MSMEs. It offers a simple, easy, and phone-first approach to creating GST-ready bills in seconds. A key feature is the ability to generate PDF bills that print in the customer's own language, including Hindi, Marathi, Bengali, Gujarati, Tamil, Telugu, or Kannada, ensuring readability for the recipient.<ul><li>Completely Free: Kwibo is free to use with no limits on the number of GST bills generated. There are no trials, paywalls, credit card requirements, or advertisements.</li><li>Zero Login Required: No account, phone number, or OTP is needed. Users can start billing immediately upon opening the page.</li><li>Multilingual PDFs: Generate bills that print in the customer's preferred language, not just on the screen.</li><li>Data Privacy: All billing data, including clients and GSTIN, is saved locally on the user's device within their browser. Data is sent to the server solely for PDF rendering and is then discarded, ensuring no data is stored by Kwibo. Users maintain full control over their data and can create backups at any time.</li><li>Tax Calculation: Supports calculation of CGST and SGST for same-state bills, and IGST for different-state bills.</li><li>Easy Sharing: Convert bills into PDFs with a single tap and share them directly on WhatsApp.</li></ul>Why another GST bill generator?My friend's dad runs a shop and just wanted to hand his customers a proper GST bill they could actually read, but every app made him sign up with an OTP, then printed the bill in English his customers couldn't follow, so I built Kwibo, a free, no-login generator that prints the whole bill in your customer's own language and keeps your data on your phone. Also has an offline mode, which renders everything locally. Customer data and product data is also stored locally and only the relevant bits for the bill are sent for generation when online

Kwibo — Free GST Bill Generator

healthsync is a CLI + HTTP server that parses your Apple Health export into a local, queryable SQLite database.Apple Health stores years of data - heart rate, steps, sleep, workouts, SpO2, VO2 Max — in a single XML file that can exceed 1GB.There's no official way to query it or pipe it into other tools. healthsync fixes that.<h3>What it does</h3><ul><li>Parses .zip or .xml Apple Health exports via a streaming XML decoder (~10MB constant memory, even for 950MB+ files)</li><li>Stores records in ~/.healthsync/healthsync.db — pure Go SQLite, no CGO, no setup</li><li>Deduplicates on re-import (safe to run weekly via cron)</li><li>Queries 6 metrics: heart-rate, steps, spo2, vo2max, sleep, workouts</li><li>Output as table, JSON, or CSV with --from / --to date filters</li><li>HTTP server mode with async upload (POST /api/upload → 202 Accepted, poll GET /api/upload/status) — useful for syncing from iPhone Shortcuts over Tailscale</li></ul><h3>Install</h3>Install instructions on <a target="_blank" rel="noopener noreferrer" class="break-all link-break text-gray-500 hover:underline" href="https://healthsync.sidv.dev/">https://healthsync.sidv.dev/</a><h3>Why I built it</h3>I wanted to track my own health trends without exporting to a third-party service. Apple gives you the data but no tooling to actually use it. Parsing the raw XML is non-trivial — the DTD has to be stripped before the Go XML decoder can handle it, sleep records lack a unit attribute (they're HKCategoryType, not HKQuantityType), and the file is large enough that loading it into memory is not an option.The result is a single binary that runs on macOS, Linux, and Windows. No database server, no cloud, no account. Your data stays on your machine.<h3>Links</h3><ul><li>Github: <a target="_blank" rel="noopener noreferrer" class="break-all link-break text-gray-500 hover:underline" href="https://github.com/BRO3886/healthsync/">https://github.com/BRO3886/healthsync/</a></li><li>Website: <a target="_blank" rel="noopener noreferrer" class="break-all link-break text-gray-500 hover:underline" href="https://healthsync.sidv.dev/">https://healthsync.sidv.dev/</a></li><li>About me: <a target="_blank" rel="noopener noreferrer" class="break-all link-break text-gray-500 hover:underline" href="https://sidv.dev">https://sidv.dev</a></li></ul><h3>Tech</h3><ul><li>Go 1.24, streaming xml.Decoder token loop</li><li>modernc.org/sqlite (pure Go, no CGO — cross-compiles trivially)</li><li>Chi HTTP router for server mode</li><li>go-pretty for terminal table output</li></ul> Please rate, upvote, comment and bookmark if you liked it! I personally found it especially useful to use with Claude Code and Codex CLIs to analyze my health trends 💪

healthsync

A native macOS Calendar CLI designed for both humans and AI agents. ical provides direct memory access to the Calendar store — 3000x faster than AppleScript, with zero IPC overhead. It uses <a target="_blank" rel="noopener noreferrer" class="break-all link-break text-gray-500 hover:underline" href="https://github.com/BRO3886/go-eventkit">go-eventkit</a> to facilitate this, a library I wrote for evenkit-go bindings. <a target="_blank" rel="noopener noreferrer" class="break-all link-break text-gray-500 hover:underline" href="https://peerlist.io/siddhartha/project/rem--a-cli-for-macos-reminders">rem</a> uses this too!Built for Agents:ical ships with an Agent Skill following the <a target="_blank" rel="noopener noreferrer" class="break-all link-break text-gray-500 hover:underline" href="http://agentskills.io">agentskills.io</a> open format — AI coding agents like Claude Code, Cursor, and Gemini CLI can discover and use it autonomously. Structured JSON output (-o json), deterministic exit codes, and --force flags for non-interactive execution make it a first-class tool in agentic workflows.Key Features:- Single Binary — EventKit compiled into the Go binary via cgo. Install in seconds- Natural Language Dates — 20+ patterns: "tomorrow at 3pm", "next friday", "in 2 hours", "eod"- Interactive Mode — Guided forms and searchable event picker for human use- JSON / CSV / ICS — Structured export for scripting and agent consumption. CSV and JSON import with dry-run preview.- Full CRUD + Recurrence — Events and calendars. Daily, weekly, monthly, yearly recurrence.- Calendar Management — Create, rename, recolor, and delete calendars across iCloud, Google, and other sources.Open source under MIT. Documentation at <a target="_blank" rel="noopener noreferrer" class="break-all link-break text-gray-500 hover:underline" href="http://ical.sidv.dev">ical.sidv.dev</a>.

ical - AI ready CLI for Apple Calendar

Elevate Your Workflow: The High-Performance macOS Reminders CLIExperience the power of macOS Reminders directly from your terminal. Built for speed and simplicity, this command-line interface leverages cgo and EventKit to deliver a blazing-fast experience with fast reads. No bloat, no lag, and a CLI that puts you in full control of your reminders!<h3>Key Features for Power Users</h3><ul><li>Natural Language Input: Stop wrestling with complex date formats. Simply type "tomorrow at 3pm" or "next Friday" to set deadlines instantly.</li><li>Developer-First Design: A public Go API allows you to integrate full CRUD operations, filtering, and list management into your own programs.</li><li>Data Portability: Effortlessly back up, migrate, or bulk-edit your reminders with native JSON and CSV import/export support.</li><li>Comprehensive Command Suite: Choose from 19 specialized commands, including an immersive interactive mode and shell completions.</li></ul><h3>Agent-Ready Integration</h3>This CLI isn't just for humans—it’s built for the future of AI automation. By supporting Agent Skills, it integrates seamlessly with leading AI tools like OpenClaw, Claude Code, and Codex CLI. Any agent supporting the <a target="_blank" rel="noopener noreferrer" class="break-all link-break text-gray-500 hover:underline" href="http://agentskills.io">agentskills.io</a> standard can now interact with your macOS Reminders, allowing your AI to manage your schedule, set follow-ups, and organize your life with precision.<h3>Fast. Open. Extensible.</h3>Open source under the MIT License, this tool is designed for developers who value efficiency and extensibility. Whether you’re automating your life or building an AI-powered personal assistant, this CLI is the ultimate bridge to the macOS ecosystem.

rem - a CLI for macOS Reminders

Our small contribution towards the fight against covid-19. Features: • get the latest updates from the World Health Organisation • to request for resources that you need and let the community help you • View and donate to NGOs fighting against covid • covid 19 stats

Akina

A command line tool for google tasks. So that you can easily view, edit and create tasks without leaving your terminal.

Google Tasks CLI

Riviera is south India's biggest cultural fest, hosted by VIT every year. Features: • Display event info • Search events by name, organiser and location • Display Proshow info • Event Registration • Google Maps to guide participants

Riviera 2020 App

screenshot manager makes it easy for senior developers or project managers to suggest changes to the developers working on a webpage. Features: • Group Screenshots by project • Upload image for OCR • Add/edit comments • Share comments and screenshot

SkreenShot: Screenshot manager

WomenTechies 20 App  is a one-stop spot for all information related to WomenTechies, a hackathon with an aim to provide talented and independent women with the platform and resources to help them grow in their desired field and contribute to society with impactful and beneficial solutions. Features: • Detailed timeline of the event • Instagram feed of events posted by participants • GitHub API integration  for reviewers to see the contribution • Speaker and sponsor details • FAQs (www.womentechies.dscvit.com)

WomenTechies'20 App

Lead Engineer at PepsiCo

<h3>Don't Just Copy, Copywrt</h3>An AI that actually understands why good copy matters.Tired of marketing copy that reads like it was assembled by an algorithm following a corporate handbook? Welcome to copywrt – where artificial intelligence meets actual creativity, and generic copy gets an upgrade.<h3>What We Do</h3>We transform your product descriptions into compelling copy using the same creative strategies that made Nike tell you to "Just Do It" and Oatly convince you that oat milk is basically liquid gold.Our AI doesn't just string words together. It understands the difference between wordplay (the clever stuff), juxtaposition (the unexpected stuff), reframing (the fresh perspective stuff), and direct (the straight-to-the-point stuff).<h3>The Problem We Actually Solve</h3>You know that exhausting dance with other AI tools? Ask for copy, get something generic. Ask it to "make it more creative," get something weird. Ask it to "make it more professional," and you're back to corporate speak nobody reads.copywrt is designed to nail it in one shot. We've built the context, examples, and creative intelligence right into the system, so you get copy that actually works the first time around. No more prompt engineering. No more "try again but make it..." conversations.<h3>Why We're Different</h3>Other AI tools: "Here's some copy. Let me know if you want changes."copywrt: "Here's copy that knows your industry, matches your brand personality, and understands your price point – because context matters."We've trained our AI on award-winning campaigns from Apple, Tesla, and dozens of other brands that actually know how to sell. It's like having a creative team that's studied every clever campaign but works at AI speed.<h3>For When You Need Copy That Actually Converts</h3>Stop settling for copy that sounds like every other AI-generated paragraph. copywrt is for marketing teams who value creativity, startups who need to punch above their weight, and anyone who's tired of the endless back-and-forth with generic AI tools.Because your products deserve copy that actually sells them.---Currently in alpha – refining our wit one algorithm at a time.Ready to make words work harder? Your brilliant copy is just a few taps away.P.S. – Our loading messages might be the most entertaining part of your day. We're oddly proud of that.

copywrt

GenLookup: Quick Web Text ExplainerGenLookup is a browser add-on that makes it super easy to understand stuff you find online. It adds a simple "Lookup" button when you right-click on any text you select on a webpage. What it does:<ul><li>You pick some text on a website.</li><li>Right-click, and you'll see a new option: "Lookup".</li><li>Click "Lookup".</li><li>GenLookup sends the text you picked, along with the webpage content to Ollama, along with the model of choice, which is configurable</li><li>The explanation is rendered on a popup, in the least distracting way possible</li></ul>Prerequisites:<ul><li>Ollama needs to be installed and running on your computer (or somewhere else).</li><li>Since I have not launched it on the chrome web store, you need to build and sideload it</li></ul>How to get it:<ol><li>Download the code for GenLookup.</li><li>Follow steps for installations: <a target="_blank" rel="noopener noreferrer" class="break-all link-break text-gray-500 hover:underline" href="https://github.com/BRO3886/genlookup?tab=readme-ov-file#building-the-extension">https://github.com/BRO3886/genlookup?tab=readme-ov-file#building-the-extension</a></li><li>Install the built extension in your browser</li></ol>The main idea behind this was to not deviate away from a current blog you're reading where you might want to know more about a certain keyword / phrase in the context of the blog. My end goal for this project is powering it through BYOK Claude and GPT, along with more powerful features, and the aesthetics of Apple's inbuilt "Lookup" feature - the inspiration for this project.It's a fun little project I made over the weekend. If you liked it please upvote! ⬆️ All ears for feedback 👂 ⬇️