Related Products
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About
Flexprice is an open source, developer-first platform designed to simplify metering, pricing, and invoicing for SaaS and AI products. It enables teams to build usage-based, credit-based, or hybrid pricing models with full control. Flexprice's real-time usage metering allows you to define granular events, such as API calls, compute time, or custom actions, and track them reliably, even at scale. It supports prepaid and promotional credits, auto top-ups, and expiration rules, all configurable without extra logic. Its flexible pricing engine lets you define and iterate on seat-based, usage-based, or hybrid plans, override them per customer, and adapt pricing over time without additional engineering effort. With built-in feature management, you can define Boolean, metered, and config features per plan and customer, enforcing limits directly in your backend. Flexprice generates accurate invoices from real-time usage, subscriptions, or credits.
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About
ReqKey adds API key authentication, usage credits, rate limiting and request analytics to an API you own. Your own middleware makes a single verify call per incoming request: ReqKey validates the caller’s key, deducts a credit from that consumer’s pool, enforces their rate limit, and records the request with status code, latency and location. It never sits in front of your API — no proxy, no gateway, no DNS change — so it adds no hop to your critical path. Validation averages under 5ms. Credits pool per consumer rather than per key, so issuing a customer a second key does not hand them a second quota, and balances stay synced across regions. Also included: shadow limits, controlled overage, reusable plans, low-credit alerts, and per-request logs filterable by endpoint, status, consumer and time range. ReqKey meters and tracks usage — you keep your own billing stack. SDKs for Python, Node.js, Go, Rust, PHP, .NET and Java, with framework adapters for FastAPI, Express, Django, and more.
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Platforms Supported
Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook
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Platforms Supported
Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook
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Audience
SaaS developers and product teams requiring a solution to manage complex billing models without extensive engineering overhead
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Audience
Software teams and SaaS companies that expose a public, partner-facing or customer-facing API and need to authenticate API keys, meter usage per customer, enforce rate limits and monitor API traffic.
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Support
Phone Support
24/7 Live Support
Online
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Support
Phone Support
24/7 Live Support
Online
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API
Offers API
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API
Offers API
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Screenshots and Videos |
Screenshots and Videos |
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Pricing
$300 per month
Free Version
Free Trial
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Pricing
$0 (free tier), $20/month Pro
Free Version
Free Trial
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Reviews/
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Reviews/
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Training
Documentation
Webinars
Live Online
In Person
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Training
Documentation
Webinars
Live Online
In Person
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Company InformationFlexprice
Founded: 2024
United States
flexprice.io
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Company InformationReqKey
Founded: 2026
www.reqkey.com
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Alternatives |
Alternatives |
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Categories |
Categories |
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API Management Features
Access Control
Analytics
API Design
API Lifecycle Management
Dashboard
Developer Portal
Testing Management
Threat Protection
Traffic Control
Version Control
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Integrations
Go
Java
Python
Aftershoot
HTML
HubSpot CRM
JavaScript
Node.js
PHP
QuickBooks Online
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Integrations
Go
Java
Python
Aftershoot
HTML
HubSpot CRM
JavaScript
Node.js
PHP
QuickBooks Online
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