Best Alternatives to Reality Defender

Wiz is a New York-based cloud security platform — acquired by Alphabet/Google (NASDAQ: GOOGL) in a $32 billion deal announced in March 2025 (the largest cybersecurity acquisition i

Tracecat is a San Francisco-based open-source security automation platform — backed by Y Combinator (W24) with $500,000-$2 million in seed funding from Y Combinator, Pioneer.app, P

Island Technology is an enterprise browser company founded in 2020 and headquartered in Dallas, Texas. The company was founded by Michael Fey and Dan Amiga to reimagine how enterpr

Microsoft Sentinel is a cloud-native SIEM (Security Information and Event Management) and SOAR (Security Orchestration, Automation, and Response) platform built on Azure — providin

1Password is an enterprise password manager and secrets management platform enabling individuals, teams, and businesses to securely store, manage, and share credentials, credit car

Bitwarden is a Santa Barbara-based open-source password manager and identity security platform — backed with $100 million raised in a Series C led by PSG in September 2022 — provid

Anduril Industries is a defense technology company building autonomous weapons systems, surveillance infrastructure, and AI-driven defense platforms for the US military and allied

Protex AI is a Dublin-based industrial computer vision company providing AI-powered workplace safety monitoring that integrates with existing CCTV infrastructure to detect unsafe b

Notabene is a Brooklyn-based cryptocurrency compliance platform that helps crypto exchanges, financial institutions, and virtual asset service providers (VASPs) meet Travel Rule re

Riot is a Paris, France-based employee cybersecurity awareness and monitoring platform — backed with $45 million in total funding including a $30 million Series B in February 2025

WorkOS is a developer platform providing enterprise features as a service, allowing SaaS companies to add single sign-on (SSO), directory sync (SCIM), audit logs, and user manageme

Seal Security is a Tel Aviv, Israel-based open source vulnerability patching platform — backed by Y Combinator (W20) with $20 million in total funding from MORE Investment House, S

Abridge is a Pittsburgh, Pennsylvania-based healthcare AI clinical documentation platform — backed with approximately $800 million in total funding including a $300 million Series

Browser Use is an open-source project that provides a Python library allowing AI agents and large language models to control web browsers as a tool. The library sits between LLM AP

Beyond Identity is a cybersecurity company founded in 2020 by Jim Clark (founder of Netscape and Silicon Graphics) and Tom Casey, built around the conviction that passwords are fun