Aviationstack ◆
Aviationstack is a scalable REST API for real-time flight tracking, historical flight data, airport info, and global aviation data.

ConfigCat (Developer Tools): ConfigCat is a cross-platform feature flag service with unlimited seats, reasonable pricing, and a forever free plan. Pricing: from $0 (Forever Free) or $110/mo (Pro). (data verified August 2026)
Transparency: if you buy through our links we may earn a commission, at no extra cost to you. Rankings cannot be bought. How we rate tools
ConfigCat is a hosted feature flag and configuration management service that lets you turn features on or off remotely through its dashboard, even after your code is deployed. It decouples feature releases from code deployments, enabling safer and more frequent releases.
Without feature flags, deploying new features requires code releases, which can be risky and slow. ConfigCat solves this by giving teams control over feature visibility without redeploying, supporting gradual rollouts, A/B testing, and targeted releases based on user attributes like region, email, or subscription level.
ConfigCat is ideal for development teams of all sizes—from startups to enterprises—especially those using multiple platforms (web, mobile, backend). It's not for teams that need a full experimentation platform with advanced statistical analysis; it focuses on feature flag management and configuration.
Teams use ConfigCat to roll out new features gradually to a percentage of users, test variations with A/B testing, manage configuration across environments, and even provide tiered paid features by targeting user segments. It integrates seamlessly with popular tools like GitHub, Slack, and Datadog.
Editorial score from our review methodology — not user ratings.
ConfigCat pricing: from $0 (Forever Free) or $110/mo (Pro). Billing model: Freemium.
$0 per month — no credit card required. Includes 10 feature flags, 2 environments, 2 products, 2 segments, 4 targeting rules per flag, 4% options per flag, 1 permission group, 2FA, 1 webhook, 5 million config JSON downloads/month, 20GB network traffic, and 7-day audit log retention.
$110 per month (billed monthly) or as low as $88/month billed annually. Includes 100 feature flags, 3 environments, 3 products, 3 segments per product, 8 targeting rules per flag, 8% options per flag, 2 permission groups, 2FA, SSO, SAML, 3 webhooks, 25 million config JSON downloads/month, 100GB network traffic, and 35-day audit log retention.
$325 per month (billed monthly) or ~$260/month annually. Includes unlimited feature flags, unlimited environments, 10 products, unlimited seats, unlimited segmentation, unlimited permission groups, SSO, SAML, SCIM, unlimited webhooks, 250 million config downloads/month, 1TB traffic, and 35-day audit log retention.
$900 per month (billed monthly) or ~$720/month annually. Includes everything in Smart, plus unlimited products, 1 billion config downloads/month, 4TB traffic, 2-year audit log retention, and premium SLA with 99.99% uptime.
$4,500 per month. Includes all Enterprise features, 6 billion+ config downloads, 24TB traffic, private cloud deployment (hosted or on-premise), software escrow, and custom agreements.
All plans come with a 14-day free trial for paid tiers — no credit card required for the free plan.
Don’t take our word for it — ask your AI about ConfigCat