Alternatives

Concrete alternatives for AI agents.

Compare similar skills by workflow fit, trust score, quality, GitHub adoption, maintenance, and install readiness.

Current skill

Concrete

Concrete: TFHE Compiler that converts python programs into FHE equivalent

88
Quality
85
Trust
1.6K
Stars
#1

Fully Homomorphic Encryption

Similarity 155Trust 91Excellent 100

An FHE compiler for C++

3.6K starsMay 7, 2026 pushlegal-compliancePrivacyClaude Code
$ npx skills add google/fully-homomorphic-encryption
#2

Openfhe Development

Similarity 144Trust 95Excellent 100

This is the development repository for the OpenFHE library. The current version is 1.5.1 (released on April 10, 2026).

1.1K starsJun 16, 2026 pushlegal-complianceC++Privacy
$ npx skills add openfheorg/openfhe-development
#3

Peergos

Similarity 131Trust 91Excellent 100

A p2p, secure file storage, social network and application protocol

2.4K starsJun 14, 2026 pushlegal-complianceJavaPrivacy
$ npx skills add Peergos/Peergos
#4

Hemmelig.App

Similarity 128Trust 85Excellent 97

Keep your sensitive information out of chat logs, emails, and more with encrypted secrets.

1.2K starsJun 12, 2026 pushlegal-complianceTypeScriptPrivacy
$ npx skills add HemmeligOrg/Hemmelig.app
#5

Ente

Similarity 128Trust 95Excellent 100

💚 End-to-end encrypted cloud for everything.

27K starsJun 16, 2026 pushlegal-complianceDartPrivacy
$ npx skills add ente-io/ente
#6

Fhevm

Similarity 127Trust 94Excellent 100

FHEVM, a full-stack framework for integrating Fully Homomorphic Encryption (FHE) with blockchain applications

25K starsJun 16, 2026 pushlegal-complianceRustPrivacy
$ npx skills add zama-ai/fhevm
#7

Setup Ipsec Vpn

Similarity 127Trust 92Excellent 100

Set up your own IPsec VPN server in just a few minutes, with IPsec/L2TP, Cisco IPsec and IKEv2. Supports Ubuntu, Debian, CentOS/RHEL, Amazon Linux, Alpine and Raspberry Pi. Includes client config and management scripts.

28K starsJun 16, 2026 pushlegal-complianceShellPrivacy
$ npx skills add hwdsl2/setup-ipsec-vpn
#8

Concrete Ml

Similarity 127Trust 87Excellent 88

Concrete ML: Privacy Preserving ML framework using Fully Homomorphic Encryption (FHE), built on top of Concrete, with bindings to traditional ML frameworks.

1.4K starsFeb 17, 2026 pushlegal-compliancePythonPrivacy
$ npx skills add zama-ai/concrete-ml
#9

Keepassxc

Similarity 125Trust 92Excellent 100

KeePassXC is a cross-platform community-driven port of the Windows application “KeePass Password Safe”.

28K starsJun 4, 2026 pushlegal-complianceC++Privacy
$ npx skills add keepassxreboot/keepassxc
#10

Lastsignal

Similarity 125Trust 87Excellent 85

A self-hosted dead man's switch for delivering encrypted messages (E2EE) to your loved ones — when you're gone or unresponsive.

652 starsJun 16, 2026 pushlegal-complianceRubyPrivacy
$ npx skills add giovantenne/lastsignal
#11

Swifty

Similarity 123Trust 81Strong 77

🔑 Free Offline-first Password Manager

944 starsJan 23, 2026 pushlegal-complianceJavaScriptPrivacy
$ npx skills add swiftyapp/swifty
#12

Freenet Core

Similarity 123Trust 89Excellent 100

Declare your digital independence

2.7K starsJun 16, 2026 pushlegal-complianceRustPrivacy
$ npx skills add freenet/freenet-core
#13

Wireguard Install

Similarity 123Trust 93Excellent 100

WireGuard VPN server installer for Ubuntu, Debian, AlmaLinux, Rocky Linux, CentOS, Fedora, openSUSE and Raspberry Pi OS. Includes interactive setup and client management.

1.8K starsJun 16, 2026 pushlegal-complianceShellPrivacy
$ npx skills add hwdsl2/wireguard-install
#14

Openvpn Install

Similarity 122Trust 93Excellent 100

OpenVPN server installer for Ubuntu, Debian, AlmaLinux, Rocky Linux, CentOS, Fedora, openSUSE, Amazon Linux 2 and Raspberry Pi OS. Includes interactive setup and client management.

1.7K starsJun 16, 2026 pushlegal-complianceShellPrivacy
$ npx skills add hwdsl2/openvpn-install
#15

Portable Secret

Similarity 122Trust 76Strong 73

Better privacy without special software

1.7K starsJul 21, 2024 pushlegal-complianceHTMLPrivacy
$ npx skills add mprimi/portable-secret
#16

Databuddy

Similarity 122Trust 94Excellent 100

Databuddy is a privacy-first analytics platform with a focus on user experience, with it's foundation built on privacy, it ensures complete compliance with most major data privacy laws out of the box

1.1K starsJun 16, 2026 pushlegal-complianceTypeScriptPrivacy
$ npx skills add databuddy-analytics/Databuddy

How to choose

When should you switch?

Use an alternative when it has a clearer install path, higher trust score, fresher maintenance, or better platform fit for your current agent stack. Keep Concrete if it already passes your workflow test and repository review.

Next step

Compare top candidates side by side

Open the compare page, test the install commands in a sandbox, and check each repository before using a skill in production.