
Killercoda
Instruqt
LeetCode
SadServers.com
KataCoda
KodeKloud
SudoRank
Learn by Fixing
Emisar.dev
Access interactive environments simply in the browser. Study scenarios by others or create scenarios for your audience. Our format is Katacoda compatible, so you can simply run your Katacoda scenarios on Killercoda.
Emisar is the last MCP server youโll need to install: a Zero-Trust gateway connecting Claude, Cursor, ChatGPT, and any AI agent to your infrastructure. One server handles production access, debugging, alerts, and internal operations, with new capabilities added as packs. Agents can inspect real production state, debug what they shipped, and help resolve incidents. Safe reads run automatically; policy allows, blocks, or routes risky actions for approval. No SSH keys, VPNs, remote shells, or standing shell access โ and every call is recorded.
Killercoda
Emisar.devNo features have been listed yet.
Emisar.dev's answer:
emisar is for SRE, DevOps, platform engineering, infrastructure, and security teams that want AI agents to inspect and operate production systems. It is especially relevant to teams managing multiple Linux hosts, clusters, databases, cloud services, or regulated environments where unrestricted shell access and incomplete audit records are unacceptable.
Emisar.dev's answer:
The hosted control plane and operator interface use Elixir, Phoenix, LiveView, PostgreSQL, and Tailwind CSS. The host runner and MCP bridge are written in Go. Action packs use YAML and JSON Schema, while production infrastructure is managed with Terraform on Google Cloud. The system communicates through MCP, OAuth 2.1, TLS, and WebSockets.
Emisar.dev's answer:
Emisar.dev's answer:
Founder Andrii Dryga spent a decade working as a CTO, full-stack engineer, SRE, and DevOps engineer. He experienced the cost of running the wrong command on the wrong cluster, while also seeing AI solve operational problems in seconds. emisar grew from the need to preserve both truths: AI agents are useful, and production access must remain bounded. Its answer is to give agents a reviewed catalog of operations instead of a blank terminal.
Emisar.dev's answer:
emisar lets AI agents work on real infrastructure without giving them a shell. Agents choose from a finite catalog of typed, versioned actions. Policy decides what runs, what requires approval, and what is denied, while an outbound-only runner verifies the action again on the host. New capabilities arrive as packs behind the same MCP integration, and every request is recorded in both a searchable audit trail and a tamper-evident host journal. [
Emisar.dev's answer:
Choose emisar when you want an agent to keep investigating and handling routine operations without handing it SSH credentials or supervising every call. Compared with raw shell access, copy-paste workflows, or one-off MCP servers, emisar provides reviewed action contracts, host-level enforcement, risk-based policy, scoped access, approvals, pack integrity checks, and a durable audit trail. It is built specifically for governed infrastructure access rather than generic automation.
Based on our record, Killercoda seems to be more popular. It has been mentiond 18 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
Hands-On Labs: Platforms like Play with Kubernetes and Killer.sh provide interactive labs for experimenting with advanced configurations and failure scenarios, reinforcing theoretical knowledge with practical experience. - Source: dev.to / about 2 months ago
I took detailed notes in my Notion about Linux commands and practiced in the playground suggested by Roxs. - Source: dev.to / 4 months ago
Sign up or login into KillerCoda. [https://killercoda.com]. - Source: dev.to / 8 months ago
I launched an Ubuntu playground on Killercoda, which gave me access to a Linux terminal environment. - Source: dev.to / 8 months ago
Killercoda offers free environments (based on Ubuntu) with various tools for beginners to try hands-on. It also has the Kubernetes playground which provides control plane server access for 1 hour. In which we can try to practice hands-on with control plane components. Because sometimes we are dependent on training platforms to try the control plane (or kubeadm) practice, and killercoda comes handy as a free... - Source: dev.to / about 3 years ago
Instruqt - Product-Led growth made simple. A modern approach to educate and sell that actually works even for complex software.
LeetCode - Practice and level up your development skills and prepare for technical interviews.
SadServers.com - Troubleshoot and make a sad server happy! "Like LeetCode for Linux" Capture The Flag challenges. Train and prove your debugging skills. Practice for your next SRE/DevOps interview. Get a full remote Linux server with a problem and fix it.
KataCoda - Interactive Learning Platform for Software Engineers
KodeKloud - We are a fast growing EdTech startup on trending technologies in IT and Cloud Computing.
SudoRank - Master Linux, Kubernetes, networking, and DevOps by fixing real broken systems. 610+ hands-on challenges on real VMs and clusters with an AI tutor.