Software Alternatives, Accelerators & Startups

OpenSky Network VS Emisar.dev

Compare OpenSky Network VS Emisar.dev and see what are their differences

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OpenSky Network logo OpenSky Network

The OpenSky Network is a non-profit ADS-B exchange for sharing real time aircraft data broadcast over the airwaves. The network consists of thousands of sensors connected to the Internet by volunteers which collect ADS-B and Mode S broadcast data.

Emisar.dev logo Emisar.dev

One governed MCP server connects any AI agent to a finite action catalog, enforced on-host with pack trust, policy gates, human approvals, and a hash-chained audit trail.
  • OpenSky Network Landing page
    Landing page //
    2021-11-25
  • Emisar.dev Approvals
    Approvals //
    2026-07-21
  • Emisar.dev Audit Log
    Audit Log //
    2026-07-21
  • Emisar.dev Policies
    Policies //
    2026-07-21
  • Emisar.dev Runner fleet
    Runner fleet //
    2026-07-21

Emisar is the last MCP server youโ€™ll 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.

Emisar.dev

Website
emisar.dev
$ Details
freemium $20.0 / Monthly (per runner)
Startup details
Country
United States
State
CA
Founder(s)
Andrew Dryga
Employees
1 - 9

OpenSky Network features and specs

  • Free Access
    OpenSky Network provides free access to real-time and historical air traffic surveillance data, making it a valuable resource for researchers, developers, and aviation enthusiasts.
  • Comprehensive Data
    The platform offers detailed information on flights, including aircraft positions, velocities, and identities, allowing for extensive analysis and visualization.
  • Community-Based
    The network benefits from a large community of contributors who share data collected from their own ADS-B receivers, enhancing data coverage and accuracy.
  • Open Data Format
    Data from OpenSky Network is available in an open format, making it easy for users to integrate and utilize it in their own applications and research projects.
  • Research Support
    OpenSky actively supports research by providing a platform for aviation-related projects, publications, and data collaborations.

Possible disadvantages of OpenSky Network

  • Coverage Limitations
    Despite extensive data collection, OpenSky Network may have gaps in data coverage, especially in areas with fewer contributors or less air traffic.
  • Data Latency
    Due to the nature of its crowd-sourced data collection, there can be delays in data updates depending on the contributorsโ€™ setups and connectivity.
  • Technical Expertise Required
    Utilizing OpenSky data effectively often requires technical skills in data handling and analysis, which can be a barrier for some users.
  • Privacy Concerns
    Although OpenSky adheres to privacy guidelines, there may still be concerns regarding the tracking of aircraft and associated data privacy issues.

Emisar.dev features and specs

No features have been listed yet.

Category Popularity

0-100% (relative to OpenSky Network and Emisar.dev)
Maps & Navigation
100 100%
0% 0
AI Tools
0 0%
100% 100
Maps
100 100%
0% 0
Infrastructure Monitoring

Questions & Answers

As answered by people managing OpenSky Network and Emisar.dev.

How would you describe the primary audience of your product?

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.

Which are the primary technologies used for building your product?

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.

Who are some of the biggest customers of your product?

Emisar.dev's answer:

  • Blitz.gg - game analytics for billions of matches and a pretty large infrastructure.

What's the story behind your product?

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.

What makes your product unique?

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. [

Why should a person choose your product over its competitors?

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.

User comments

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Reviews

These are some of the external sources and on-site user reviews we've used to compare OpenSky Network and Emisar.dev

OpenSky Network Reviews

Best Flight Data APIs in 2024
OpenSky Network helps urban planning by showing flight paths and their impacts. It improves aviation safety by analyzing near-miss incidents. Insurance companies can verify flight claims with real-time data. It also allows developers to create new apps using air traffic information for logistics and tourism.
Source: geekflare.com

Emisar.dev Reviews

We have no reviews of Emisar.dev yet.
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Social recommendations and mentions

Based on our record, OpenSky Network seems to be more popular. It has been mentiond 4 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.

OpenSky Network mentions (4)

  • Understanding The API
    What about opensky-network.org? Their API is free if you are a feeder. I use Node-RED to get the exact information you mention. Not sure what programming language you are going to use, but if I can get it working in Node-RED as a non-programmer, you should have it up and running in just a few minutes. Source: almost 5 years ago
  • What is the Best Mapped Site to See Plane Routes for a Given Day/Week?
    You may try https://opensky-network.org/, they have a good historical data for aircrafts. Might be something you can find for the airports as well. Source: almost 5 years ago
  • Do personal MLOps projects exist?
    I haven't thought much about this actually. I wouldn't know how to do something interesting with monitoring/streaming/retraining because as you say, it looks like you would need a proper production setting; that said, there are some interesting open source streaming data sources out there, I recently saw some open live data for flights around the world for example (I think it's this one). Source: about 5 years ago
  • My girlfriend was flying from DIA to Nashville yesterday. This is what happened.
    Flightradar24 filters out a lot of data. ie: military flights. You should look into using opensky-network.org. Source: about 5 years ago

Emisar.dev mentions (0)

We have not tracked any mentions of Emisar.dev yet. Tracking of Emisar.dev recommendations started around Jul 2026.

What are some alternatives?

When comparing OpenSky Network and Emisar.dev, you can also consider the following products

FlightAware - Live Flight Tracking

RadarBox - Real-time flight tracking app with one of the best and most accurate coverage worldwide.

ADSBExchange - The worldโ€™s largest co-op of ADS-B/Mode S/MLAT feeders, and the worldโ€™s largest public source of unfiltered flight data. Access to worldwide flight tracking data for hobbyists, researchers, and journalists alike.

ADSB Hub - The main goal of ADSBHub is to become a ADS-B data sharing centre and valuable data source for all enthusiasts and professionals interested in development of ADS-B related software.

Plane Finder - Plane Finder is built on Automatic Dependent Surveillance โ€“ Broadcast (ADS-B) enabling the transmission of real-time data directly from, and to, aircraft.

VariFlight - VariFlight is a live flight tracking service that allows you to have real-time information about flights worldwide.