OpusTools

OpusTools is a lightweight online tool that helps you convert, compress, and download audio or video files using the Opus codec—right from your browser. No installs, no ads, no bloat.

You just drag in a file, set a few quality options, and download the result in seconds. It works entirely client-side, so your media never gets uploaded or stored anywhere.

I built it because most converters I found were either filled with ads, required installing sketchy software, or had annoying usage limits. I wanted something simple, fast, and privacy-friendly.

I use it for reducing audio file sizes when sharing clips on platforms like Telegram or WhatsApp, and it’s also great for podcast audio, game assets, or compressing background music for web apps. The Opus codec delivers great quality at small sizes.

Seyi Oderinde

Olufemi Akinyemi

ExpertsNG is a business development and management consulting firm operating from the heart of Africa, Nigeria.

Our mission is to help both local and international investors easily navigate the ever-changing business and investment landscape of Nigeria.

We help with services such as research, company registrations, business certifications, arrangements of legal representations, finance, human resources, and any other expert concierge services required by intending investors to Nigeria.

ExpertsNG

Ishola Boluwatife

Sharetravs is a car-hailing platform that offers mobility solutions by providing car-sharing services for city commuters and travelers within and beyond a region.

Sharetravs

Emmanuel Sohe

Cardtonic is Africa’s leading platform for virtual dollar cards and everyday digital payments, empowering millions of users to spend online without borders. Designed to make online spending and alternative payments simple, Cardtonic provides seamless access to global services and products, eliminating limits on international purchases, payment failures, and currency restrictions that often challenge African consumers. As the only platform in Africa that combines virtual dollar cards, prepaid cards, vouchers, bill payments, and a curated gadget store within one trusted and easy-to-use app, Cardtonic stands as a complete digital finance solution. Users can create secure virtual Visa and Mastercard dollar cards in seconds, shop or pay for services worldwide, and enjoy the convenience of a unified wallet that supports local and international bill payments. The marketplace also offers prepaid cards, vouchers, and gift cards, while the Just Gadgets store provides top-quality tech products directly within the app. With millions of downloads, hundreds of thousands of monthly transactions, and an ever-growing user base, Cardtonic continues to redefine financial freedom across Africa. By combining innovation, reliability, and rewards, Cardtonic ensures that Africans can make global payments, purchase digital products, and manage their finances confidently, all from one powerful platform built for today’s connected world.