Javalin
You never extend classes and you rarely implement interfaces. Javalin is just a few thousand lines of code on top of Jetty, and its performance is equivalent to raw Jetty code. Due to its size, it's very easy to reason about the source code. Other Java and Kotlin web frameworks usually offer one version for each language. Javalin is being made with inter-operability in mind, apps are built the same way in both Java and Kotlin. Javalin runs on top of Jetty, one of the most used and stable web servers on the JVM. You can configure the Jetty server fully, including SSL and HTTP3 and everything else that Jetty offers. Many lightweight Java and Kotlin web frameworks don't support OpenAPI, but Javalin does.
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KoinKoin
KoinKoin brings all your fiat and crypto exchange requirements together. The app permits you to buy/sell digital currencies using local payment methods. It is fast, and convenient, and includes built-in security technology to ensure all your digital assets and your data are safe and highly secure. The app has numerous functions allowing you to purchase cryptocurrency via Credit / Debit card, mobile money, and bank transfer. KoinKoin also allows each user to earn USDT-based digital tokens using our generous referrals program allowing KoinKoin customers to potentially earn the crypto way without making a single deposit. We provide you with quick and easy access to buy and sell digital currencies using local payment methods. We accept all payment types and deliver coins to your wallets.
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KoinX
KoinX is a comprehensive cryptocurrency taxation and portfolio-management platform that automates transaction importing, classification, and tax calculations across hundreds of wallets and exchanges. Trusted by millions, KoinX delivers accurate, audit-ready tax reports and real-time portfolio insights.
With $175B+ turnover processed, 1.5M tax reports generated, and support for 25,000+ assets across 800+ exchanges, KoinX is engineered for reliability, compliance, and global scale. KoinX consolidates all your crypto activity into one dashboard, automatically importing data from exchanges, wallets, and blockchains. It classifies trades, staking income, transfers, NFTs, and more, then generates region-specific tax reports within minutes.
Alongside taxes, KoinX offers portfolio tracking, P&L analytics, cost-basis insights, multi-year reporting, and tools for accountants and enterprises handling digital assets.
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Kotzilla
Visualize and resolve thread performance issues, memory leaks, and structural app issues, during development or in production. Koin’s container captures only essential app behavior data, ensuring minimal overhead. Understand and debug the lifecycle of component instances and scopes, their loading times, and execution among different threads. This ensures proper management and resource allocation while identifying and preventing errors such as memory leaks, performance issues, and ANRs. Analyze dependencies to understand relationships between different components. Optimize the dependency injection process, simplifying development and debugging efforts. This proactive analysis ensures reliability and scalability by detecting and addressing potential issues early. Gain granular traceability of components and lifecycles with Kotzilla’s dedicated API. Visualize identified issues and application crashes to get comprehensive insights into your app’s performance and stability.
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