roistack.org

ROIStack is a free platform offering 54+ calculators for ROI analysis, AI investments, marketing performance, SaaS metrics, hiring costs, profitability, and financial planning. Designed for founders, marketers, investors, and business professionals, ROIStack provides transparent formulas, clear methodologies, and instant browser-based calculations. Users can evaluate opportunities, compare scenarios, estimate returns, and make data-driven decisions without complex spreadsheets or black-box tools. Free to use. No signup required.

EsportsOdds

EsportsOdds: Real-time CS2 Data API for Developers & Trading DesksEsportsOdds provides a comprehensive esports data API specifically designed for Counter-Strike 2, offering real-time match data, player statistics, tournament information, and a unique market odds line. It serves as an essential resource for developers building esports applications, data product providers, and trading desks requiring accurate and timely esports market insights.Key Features:Real-time CS2 market odds line with ≤90s update cadence, aggregated from multiple books.Extensive CS2 match, player, team, and tournament data, normalized into a consistent schema.WebSocket stream for instant push updates on line movements and scores.Append-only historical odds data, timestamped for precise backtesting and market analysis.Plain REST API with Bearer authentication, no SDK required, compatible with any language.Roadmap includes League of Legends, Dota 2, and Valorant data.Use Cases:Developers can leverage EsportsOdds to build dynamic match pages, integrate live scores and odds into their applications, and create engaging user experiences without the need for complex scraping. The stable IDs and normalized schema simplify data integration, allowing for rapid product development.Data product companies can publish trustworthy player and team statistics, alongside a reliable market odds line, enhancing their content offerings and providing deeper insights to their audience. The consistent data quality and comprehensive coverage ensure accuracy and credibility.Trading desks benefit from the append-only historical odds data, enabling rigorous backtesting against the exact prices that existed at any given time. This granular data is crucial for developing and refining sophisticated trading models and strategies.Pricing Information:EsportsOdds offers a straightforward, flat-rate pricing model at $99 per month, which includes access to all REST endpoints, the WebSocket stream, and 10,000 requests. There are no hidden tiers or metering surprises. A 7-day free trial is available, requiring a card for signup but allowing cancellation anytime before the trial ends.User Experience and Support:The API is designed for ease of use, featuring a plain REST interface with Bearer authentication and a WebSocket stream for push updates. No specific SDK is required, making it accessible from any programming language. Comprehensive documentation is provided via an OpenAPI reference, alongside a quickstart guide to get users up and running in under a minute.Technical Details:The platform utilizes a REST + WebSocket API architecture, ensuring both pull-based data retrieval and real-time push notifications. Data is delivered through a single, normalized schema across all resources (matches, players, teams, tournaments, odds), simplifying data consumption and integration. Historical data is append-only, preserving every tick with UTC timestamps for complete market movement analysis.Pros:Real-time, high-cadence CS2 odds and match data.Extensive historical odds data for robust backtesting.WebSocket for instant push updates, reducing polling needs.Normalized, consistent data schema across all endpoints.Transparent, flat-rate pricing with no hidden fees.Clear roadmap for additional esports titles.Cons:Currently supports only Counter-Strike 2 (other titles are on roadmap).Free trial requires credit card information.Base plan has a request limit (10,000/month), higher volume requires contact.No free tier available.Conclusion:EsportsOdds stands out as a powerful and reliable API for anyone needing high-quality Counter-Strike 2 esports data, from live odds to historical market movements. Its developer-friendly design and commitment to data integrity make it an invaluable asset for building, analyzing, and trading within the esports ecosystem. Start your 7-day free trial today to explore its capabilities.

CrunchJunkie

CrunchJunkie is a reporting and analytics hub for agencies and marketers — pull Google Ads, Meta, GA4, and Search Console into one live dashboard, then track how visible your brand actually is in AI search and chat results like ChatGPT and Perplexity. Build a report once, schedule it to send automatically, and stop copy-pasting numbers into slides every Friday.

Reelensai

ReelensAI is an AI-powered Instagram growth intelligence platform that helps brands, influencers, and creators understand what is really driving their performance. Going beyond surface-level metrics like likes, shares, reach, and followers, ReelensAI analyzes profiles, content patterns, audience signals, engagement, visibility, and growth opportunities to deliver actionable insights. Built around a growing library of brand studies, industry reports, benchmarks, and Instagram performance patterns, ReelensAI transforms scattered data into clear recommendations. Instead of guessing what to post next, users can understand what is working, identify what is holding them back, and take smarter action. ReelensAI turns Instagram data into insights that help businesses and creators grow.

Tubient

YouTube Studio tells you what happened. Tubient tells you why.Tubient is a visual analytics platform for YouTube creators who want real answers. Instead of generic dashboards, you build custom analytics pipelines on a canvas — connecting date ranges, filters, and metrics — then ask your data anything in plain English.Ask "which video drove my subscriber growth?" and the AI builds the pipeline, pulls the data, and delivers a clear narrative answer. Every result stays on the canvas as connected nodes, so you can see exactly how a conclusion was reached — and rewire any step yourself.What creators get:- Ask, don't dig. Natural-language queries become working analytics pipelines in seconds.- A canvas you control. Drag, connect, and rewire nodes to explore your own angles — nothing is a black box.- Shorts and long-form, understood separately. Tubient classifies formats automatically so your Shorts data never muddies your long-form trends.- Real numbers, fast. A multi-tiered cache keeps results instant and stays well inside YouTube's API limits.- Your data stays yours. Secure Google OAuth, encrypted token storage, and read-only access to your channel.Built for YouTube creators, channel managers, and agencies who want to stop guessing and start seeing why the numbers move.