macOS
Homebrewverified · 100%
brew install showcertlocal Homebrew formula metadata
brew / rank 4405
Install showcert with Homebrew, dnf
X.509 TLS certificate reader and creator. Version 0.4.16 via Homebrew; verified 2026-09-13. Also installable with dnf: sudo dnf install showcert.
install
Additional install commands
Linux
Fedora dnfverified · 92%
sudo dnf install showcertFedora Rawhide package metadata · showcert · source: dl.fedoraproject.org
overview
Package summary
X.509 TLS certificate reader and creator
Project links
Commands and aliases
- gencert
- showcert
history
Project history and usage
showcert is a Python command-line package containing `showcert` for reading and checking local or remote X.509 certificates and `gencert` for creating development certificates.
Project history
showcert was created as a human-oriented front end for routine X.509 work. The project separates read-oriented operations into `showcert` and development certificate creation into `gencert`.
The project deliberately targets common certificate tasks rather than the full breadth of OpenSSL. Its documentation warns that certificates generated by `gencert` are intended for development rather than production.
Adoption history
The official README documents installation with pipx, while the supplied package facts record Homebrew and Fedora/DNF packaging. This gives the Python utility both language-oriented and operating-system package routes.
How it is used
`showcert` accepts certificate files, standard input, hostnames, or hostname-and-port targets. It can display certificate chains, save PEM output, check names and expiration, and negotiate STARTTLS for SMTP, POP3, and IMAP.
`gencert` creates self-signed certificates or a small development CA and CA-signed certificates. It writes certificate and private-key files selected by command options; these are outputs, not a persistent credentials-file convention.
Why package nerds care
showcert packages common OpenSSL certificate-inspection pipelines into memorable commands and structured exit statuses. It is attractive for workstation checks, lightweight monitoring scripts, and development PKI tasks where direct OpenSSL invocations are unnecessarily cumbersome.
Timeline
- Project lifetime: The official repository accumulated a focused implementation and command reference for the showcert and gencert utilities.
- Current packaging: The project documents pipx installation and is also represented in Homebrew and Fedora/DNF metadata.
Related projects
- OpenSSL supplies the lower-level certificate operations whose routine command sequences showcert aims to simplify.
- Let's Encrypt and Certbot deployments receive dedicated handling through the `:le` input alias.
Sources
security posture
Risk level: green
narrow executable package without higher-risk signals.
Risk classifier
green risk · low confidence · appliance
Why
- narrow executable package without higher-risk signals
Signals
- metadata:no-higher-risk-signals
Install behavior
- No Homebrew post-install hook is recorded in formula metadata.
- Homebrew bottle metadata is available for 6 platform targets.
- Installs with 4 runtime dependencies.
Recommended review
Before unattended agent use, check whether the tool reads plaintext credentials, writes remote state, publishes artifacts, or shells out to plugins.
executables
Installed executables
| Command | Kind | Exposure | Note |
|---|---|---|---|
gencert | cli | global executable | |
showcert | cli | global executable |
freshness
Version and freshness
These signals separate page generation age, package-manager activity, and upstream release comparison. Version lag is warned only when an evidence URL and comparable versions are present.
page generated2026-09-19
manager version0.4.16
manager updated2026-09-13
local dataok
upstreamnot checked
latest detectednot detected
https://github.com/yaroslaff/showcert
- infoNo cached GitHub release or tag data was available.https://github.com/yaroslaff/showcertnone confidence
install metadata
Package metadata
| Package key | brew:showcert |
|---|---|
| Version | 0.4.16 |
| Package manager | Homebrew |
| Package manager page | https://formulae.brew.sh/formula/showcert |
| Homepage | https://github.com/yaroslaff/showcert |
| Repository | https://github.com/yaroslaff/showcert |
| License | MIT |
| Source archive | https://files.pythonhosted.org/packages/32/d1/2728789232c766247375f98cb9d224f1db4070c5ed836468dc8c7c1359e8/showcert-0.4.16.tar.gz |
| Last updated | 2026-09-13T09:03:06Z |
| Pulse | updated |
| Dependencies | certifi, cryptography, libmagic, python@3.14 |
| Bottle | available (on arm64_linux, arm64_sequoia, arm64_sonoma, arm64_tahoe, sonoma, x86_64_linux) |
| Homebrew post-install | not defined |
| Service | none declared |
registry facts
Source database details
| Source Database | Homebrew formula API |
|---|---|
| Tap | homebrew/core |
| Full Name | showcert |
| Version Scheme | 0 |
| Revision | 2 |
| Head Version | HEAD |
| Bottle Stable Root URL | https://ghcr.io/v2/homebrew/core |
| Deprecated | no |
| Disabled | no |
| Keg Only | no |
| URL Keys |
|
source database matches
Other package-manager records
Matches are pulled from external package-manager indexes and kept separate from local Automic Vault package links.
dnf95%
showcert 0.4.14-3.fc45
inspect TLS certificates presented by remote servers
https://github.com/yaroslaff/showcert
sudo dnf install showcert- License: MIT
- Category: Unspecified
- Architecture: noarch
- Source Package: showcert
- 5 dependencies
- 3 provides
- normalized package name match
- Matched by: Showcert
source trail
Generated from repository data
This page is generated by av-web from the private package SQLite artifact built by scripts/generate-pkg-sqlite.py.
Combined YAML source
View the package source record on GitHub.
Used sources
- Geiger risk classifier
- cross-ecosystem install command graph
- curated package history
- external package-manager database matches
- package relationship graph
- package version freshness
- package-page enrichment
- pkg.so package database
- pkgdb category and tag curation