Software Alternatives, Accelerators & Startups

Call2friends VS Emisar.dev

Compare Call2friends VS Emisar.dev and see what are their differences

Note: These products don't have any matching categories. If you think this is a mistake, please edit the details of one of the products and suggest appropriate categories.

Call2friends logo Call2friends

High-quality cheap and free international calls online to any mobile or landline numbers from internet and free calling app - cheaper than other VoiP providers. Try it now!

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.
  • Call2friends Landing page
    Landing page //
    2021-07-25
  • 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)
Platforms
-
Startup details
Country
United States
State
CA
Founder(s)
Andrew Dryga
Employees
1 - 9

Call2friends features and specs

  • Cost-Effective
    Call2friends offers affordable international calling rates, making it a cost-effective solution for users looking to make international calls without incurring high expenses.
  • No Registration Required
    Users can make calls without the need for registration, allowing for quick and convenient usage of the service.
  • Web-Based Service
    The service is accessible through a web browser, eliminating the need to download or install any additional software.
  • Worldwide Accessibility
    Call2friends supports a wide range of countries, enabling users to make calls to almost any location around the globe.

Possible disadvantages of Call2friends

  • Limited Free Minutes
    The service provides a limited number of free minutes, after which users are required to purchase credit to continue using the service.
  • Inconsistent Call Quality
    Users may experience varying levels of call quality, which can be affected by internet connection stability or the service's network infrastructure.
  • Internet Requirement
    As a web-based service, a stable internet connection is required, which might not always be available or reliable for all users.
  • Ads Displayed
    The free version of the service may display advertisements, which can be distracting or affect the overall user experience.

Emisar.dev features and specs

No features have been listed yet.

Call2friends videos

call2friends |Free calling apps App 2019 | ievaphoneievaphone | free call app india

More videos:

  • Review - Call2friends app doesn't work!

Emisar.dev videos

No Emisar.dev videos yet. You could help us improve this page by suggesting one.

Add video

Category Popularity

0-100% (relative to Call2friends and Emisar.dev)
Group Chat & Notifications
Incident Management
0 0%
100% 100
Communication
100 100%
0% 0
AI Tools
0 0%
100% 100

Questions & Answers

As answered by people managing Call2friends 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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What are some alternatives?

When comparing Call2friends and Emisar.dev, you can also consider the following products

Poptox - Poptox is a web application where you can communicate with people in every corner of the world.

Make Free Calls Online - Make Free Calls Online is a web application that, as the name suggests, allows its users to make international and local calls for free.

FreeCall - FreeCall is an app that enables its users to make calls locally and internally free of cost totally from cellular and Wi-Fi networks.

IEvaphone - IEvaphone is a web service that can be used for connecting with friends and family overseas and for making important business calls providing its users the luxury to make a call to any place in the world with just a secure internet connection.

BrowserCalls - BrowserCalls is a web service that allows internet users to make international and local calls at a very affordable price.

Sipnet - Sipnet is a web service that allows any internet user to connect with people all across the world by enabling them to send and receive messages and calls.