Clerk vs. Firebase vs. NextAuth.js Comparison Chart

FusionAuth is a modern, developer-focused identity and access management platform built to give you full control over your authentication stack. Whether you’re building a startup app or managing enterprise-scale infrastructure, FusionAuth delivers all the must-have features — from login and SSO to advanced protocols like OAuth2, OIDC, SAML, and WebAuthn — in a self-hostable or cloud-native package. Designed with developers in mind, FusionAuth integrates seamlessly with any language, framework, or architecture. Every capability is API-first and built for extensibility, so you can tailor authentication workflows without getting locked into rigid, inflexible systems. FusionAuth supports all the key use cases — user registration, multi-factor authentication (MFA), passwordless login, role-based access control, and more — while helping you stay compliant with GDPR, HIPAA, PCI, and other regulatory standards.

Auth0 takes a modern approach to Identity, providing secure access to any application, for any user. Safeguarding billions of login transactions each month, Auth0 delivers convenience, privacy, and security so customers can focus on innovation. Auth0 is part of Okta, The World’s Identity Company™. Auth0 lets you quickly integrate authentication and authorization for web, mobile, and legacy applications, with new Fine Grained Authorization (FGA) that goes beyond role-based access control. Authenticate users across all applications with a customized, secure, and standards-based single login. Universal Login connects users to a central authorization server. Credentials aren’t transferred across sources, which boosts security and protects against phishing and credential stuffing attacks. OAuth 2.0 recommends that only external user agents (like the browser) be used by native applications for authentication flows. Auth0’s Universal Login achieves this while enabling SSO.

Authentication happens at some of the most important, and highly impactful, places in your customers' journey. Take control of user authorization with a passwordless authentication, social integrations, and enterprise SSO. Support the branding of all your customers with custom domains and a fully customisable UI by bringing your own pages and designs. Integrate with complex requirements and run your own code during authentication using our powerful workflows. Organise all your business customers using organizations to easily segergate them and fine tune the authentication experience to their individual needs. Monetize your ideas quickly with Kinde's billing tools. Create subscription plans and collect revenue effortlessly. Kinde adapts to your business model, supporting B2C, B2B, and B2B2C with robust organization management and flexible billing logic that scales with your customers.

Sumsub is a full-cycle verification platform that secures every step of the user journey. With Sumsub’s customizable KYC, KYB, AML, Transaction Monitoring and Fraud Prevention solutions, you can orchestrate your verification process, welcome more customers worldwide, meet compliance requirements, reduce costs and protect your business. Sumsub achieves the highest conversion rates in the industry—91.64% in the US, 95.86% in the UK, and 97.89% in Hong Kong—while verifying users in less than 50 seconds on average. Sumsub’s methodology follows FATF recommendations, the international standard for AML/CTF rules and local regulatory requirements (FINMA, FCA, CySEC, MAS, BaFin). Sumsub has over 2,000 clients across the fintech, crypto, transportation, trading, e-commerce and gaming industries including Bitpanda, Wirex, Avis, Bybit, Huobi, Kaizen Gaming, and TransferGo.

Plaid is a global data network that powers the tools millions of people rely on to live a healthier financial life. Our ambition is to facilitate a more inclusive, competitive, and mutually beneficial financial system by simplifying payments, revolutionizing lending, and leading the fight against fraud. Plaid works with over 12,000 companies including fintechs like Venmo and SoFi, several of the Fortune 500, and many of the largest banks to empower people with more choice and control over how they manage their money. Headquartered in San Francisco, Plaid’s network spans over 12,000 institutions across the US, Canada, UK and Europe.

Veriam brings access and subscriptions together in one simple, secure solution. Our brand new platform makes it faster and simpler for SaaS providers to manage onboarding, access, contracting, renewals, and billing—all in one place. How Veriam stands out ✔️ All-in-one platform: Manage access and subscriptions from a single platform, reducing admin and improving workflows. ✔️ Real-time updates: Access permissions update instantly as subscription changes happen—no delays, no downtime. ✔️ Self-service controls: Customers manage their subscriptions, profiles, and access settings, reducing support tickets. ✔️ One login for customers: No password fatigue. Customers only need a single login to access products, subscriptions, and data from any organization using Veriam. ✔️ Security & Compliance: Fewer tools, fewer points of failure. Veriam meets industry standards, ensuring customer data is handled securely and privately. Try us out today!

ConnectWise SIEM (formerly Perch) offers threat detection and response backed by an in-house Security Operations Center (SOC). Defend against business email compromise, account takeovers, and see beyond your network traffic. Our team of threat analysts does all the tedium for you, eliminating the noise and sending only identified and verified treats to action on. Built with multi-tenancy, ConnectWise SIEM helps you keep clients safe with the best threat intel on the market.

TruGrid SecureRDP secures access to Windows desktops and applications from any location. It is a DaaS solution that employs a Zero Trust model without firewall exposure. Key Benefits of TruGrid SecureRDP: - No Firewall Exposure & No VPN Required: Secure remote access without exposing inbound firewall ports - Zero Trust Security Model: Ensures that only pre-authenticated users can connect, mitigating ransomware risks - Cloud-Based Authentication: Eliminates the need for RDS gateways, SSL certificates, or third-party MFA solutions - Optimized Performance: Built-in fiber-optic mesh technology reduces latency - Simple Deployment & Multi-Tenant Management: Implements in less than an hour and includes a multi-tenant dashboard - Integrated MFA & Azure AD Support: Includes built-in MFA and integrates with Azure MFA & AD - Cross-Platform Support: Works on Windows, Mac, iOS, Android, and Chrome - 24x7 Support & Free Setup: Includes 24x7 support and free setup assistance

MobiPDF (formerly PDF Extra) is an intuitive and powerful PDF editor and reader designed for today’s modern user - the cost-efficient alternative to Adobe Acrobat Pro you’ve been looking for. FEATURES OVERVIEW: PDF Viewer and Reader: Switch between page views or use "Read Mode" for distraction-free reading. Create and Edit PDFs: Modify text and images or start with a blank PDF. Convert to Office Formats: Easily turn PDFs into Word, Excel, PowerPoint, and image files. Leverage OCR: Transform scanned documents into searchable PDFs. Organize PDFs: Combine, split, reorder, and compress documents. Markup and Comment: Highlight, annotate, and add bookmarks or stamps. Fill PDFs: Seamlessly fill forms or create ones from scratch. Sign PDFs: Sign your documents anywhere—no ink required! Secure Your Work: Protect files with passwords, digital signatures, and 256-bit encryption. Offline Mode: Full functionality without internet access. Translate PDFs

Protect your business against damaging data breaches and easily comply with security frameworks like ISO 27001, GDPR, and HIPAA. Our software-only virtual private network easily integrates with your existing infrastructure to provide a flexible and scalable way to protect your organization. With our VPN Professional plan, you can securely access your LAN and SaaS resources by assigning and segmenting permissions to private dedicated VPN servers, allowing employees to access only what they need. With all plans, your network traffic is secured using strong AES-256 or ChaCha20 encryption. You can further strengthen your organization's security with enforced 2FA and seamless login through single sign-on (SSO) with SCIM support for automated user provisioning. Proton VPN's high-speed server network is one of the largest in the world and is part of a suite of open source end-to-end encrypted products from the makers of Proton Mail that are designed to keep your business secure.