diff --git a/.circleci/config.yml b/.circleci/config.yml
index 5a43999264..6cb93fdf9f 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -26,10 +26,10 @@ jobs:
       - checkout
       - restore_cache:
           keys:
-            - dep-bundle-{{ checksum "package.json" }}
+            - dep-bundle-2-{{ checksum "package.json" }}
       - run: npm install
       - save_cache:
-          key: dep-bundle-{{ checksum "package.json" }}
+          key: dep-bundle-2-{{ checksum "package.json" }}
           paths:
             - /repo/node_modules
       - run: npm run lint && npm run test && npm run downloadsolc && npm run make-mock-compiler && npm run build
diff --git a/package.json b/package.json
index e8d2bcf8d6..69d9ffd57b 100644
--- a/package.json
+++ b/package.json
@@ -19,9 +19,6 @@
     "csjs-inject": "^1.0.1",
     "csslint": "^1.0.2",
     "deep-equal": "^1.0.1",
-    "ethereumjs-abi": "https://github.com/ethereumjs/ethereumjs-abi",
-    "ethereumjs-block": "^1.6.0",
-    "ethereumjs-tx": "^1.3.3",
     "ethereumjs-util": "^5.1.2",
     "execr": "^1.0.1",
     "exorcist": "^0.4.0",
diff --git a/src/app/execution/txLogger.js b/src/app/execution/txLogger.js
index f39bfb39a4..eedd4ebaa0 100644
--- a/src/app/execution/txLogger.js
+++ b/src/app/execution/txLogger.js
@@ -12,7 +12,7 @@ var EventManager = remixLib.EventManager
 var helper = require('../../lib/helper')
 var executionContext = require('../../execution-context')
 var modalDialog = require('../ui/modal-dialog-custom')
-var typeConversion = require('./typeConversion')
+var typeConversion = remixLib.execution.typeConversion
 
 var css = csjs`
   .log {
diff --git a/src/app/execution/txRunner.js b/src/app/execution/txRunner.js
deleted file mode 100644
index a71740f0ea..0000000000
--- a/src/app/execution/txRunner.js
+++ /dev/null
@@ -1,206 +0,0 @@
-'use strict'
-var EthJSTX = require('ethereumjs-tx')
-var EthJSBlock = require('ethereumjs-block')
-var ethJSUtil = require('ethereumjs-util')
-var BN = ethJSUtil.BN
-var executionContext = require('../../execution-context')
-
-function TxRunner (vmaccounts, api) {
-  this._api = api
-  this.blockNumber = 0
-  this.runAsync = true
-  if (executionContext.isVM()) {
-    this.blockNumber = 1150000 // The VM is running in Homestead mode, which started at this block.
-    this.runAsync = false // We have to run like this cause the VM Event Manager does not support running multiple txs at the same time.
-  }
-  this.pendingTxs = {}
-  this.vmaccounts = vmaccounts
-  this.queusTxs = []
-}
-
-TxRunner.prototype.rawRun = function (args, confirmationCb, gasEstimationForceSend, promptCb, cb) {
-  run(this, args, Date.now(), confirmationCb, gasEstimationForceSend, promptCb, cb)
-}
-
-function executeTx (tx, gasPrice, api, promptCb, callback) {
-  if (gasPrice) tx.gasPrice = executionContext.web3().toHex(gasPrice)
-  if (api.personalMode()) {
-    promptCb(
-      (value) => {
-        sendTransaction(executionContext.web3().personal.sendTransaction, tx, value, callback)
-      },
-      () => {
-        return callback('Canceled by user.')
-      }
-    )
-  } else {
-    sendTransaction(executionContext.web3().eth.sendTransaction, tx, null, callback)
-  }
-}
-
-TxRunner.prototype.execute = function (args, confirmationCb, gasEstimationForceSend, promptCb, callback) {
-  var self = this
-
-  var data = args.data
-  if (data.slice(0, 2) !== '0x') {
-    data = '0x' + data
-  }
-
-  if (!executionContext.isVM()) {
-    self.runInNode(args.from, args.to, data, args.value, args.gasLimit, args.useCall, confirmationCb, gasEstimationForceSend, promptCb, callback)
-  } else {
-    try {
-      self.runInVm(args.from, args.to, data, args.value, args.gasLimit, args.useCall, callback)
-    } catch (e) {
-      callback(e, null)
-    }
-  }
-}
-
-TxRunner.prototype.runInVm = function (from, to, data, value, gasLimit, useCall, callback) {
-  const self = this
-  var account = self.vmaccounts[from]
-  if (!account) {
-    return callback('Invalid account selected')
-  }
-  var tx = new EthJSTX({
-    nonce: new BN(account.nonce++),
-    gasPrice: new BN(1),
-    gasLimit: new BN(gasLimit, 10),
-    to: to,
-    value: new BN(value, 10),
-    data: new Buffer(data.slice(2), 'hex')
-  })
-  tx.sign(account.privateKey)
-
-  const coinbases = [ '0x0e9281e9c6a0808672eaba6bd1220e144c9bb07a', '0x8945a1288dc78a6d8952a92c77aee6730b414778', '0x94d76e24f818426ae84aa404140e8d5f60e10e7e' ]
-  const difficulties = [ new BN('69762765929000', 10), new BN('70762765929000', 10), new BN('71762765929000', 10) ]
-  var block = new EthJSBlock({
-    header: {
-      timestamp: new Date().getTime() / 1000 | 0,
-      number: self.blockNumber,
-      coinbase: coinbases[self.blockNumber % coinbases.length],
-      difficulty: difficulties[self.blockNumber % difficulties.length],
-      gasLimit: new BN(gasLimit, 10).imuln(2)
-    },
-    transactions: [],
-    uncleHeaders: []
-  })
-  if (!useCall) {
-    ++self.blockNumber
-  } else {
-    executionContext.vm().stateManager.checkpoint()
-  }
-
-  executionContext.vm().runTx({block: block, tx: tx, skipBalance: true, skipNonce: true}, function (err, result) {
-    if (useCall) {
-      executionContext.vm().stateManager.revert(function () {})
-    }
-    err = err ? err.message : err
-    result.status = '0x' + result.vm.exception.toString(16)
-    callback(err, {
-      result: result,
-      transactionHash: ethJSUtil.bufferToHex(new Buffer(tx.hash()))
-    })
-  })
-}
-
-TxRunner.prototype.runInNode = function (from, to, data, value, gasLimit, useCall, confirmCb, gasEstimationForceSend, promptCb, callback) {
-  const self = this
-  var tx = { from: from, to: to, data: data, value: value }
-
-  if (useCall) {
-    tx.gas = gasLimit
-    return executionContext.web3().eth.call(tx, function (error, result) {
-      callback(error, {
-        result: result,
-        transactionHash: result.transactionHash
-      })
-    })
-  }
-  executionContext.web3().eth.estimateGas(tx, function (err, gasEstimation) {
-    gasEstimationForceSend(err, () => {
-      // callback is called whenever no error
-      tx.gas = !gasEstimation ? gasLimit : gasEstimation
-
-      if (self._api.config.getUnpersistedProperty('doNotShowTransactionConfirmationAgain')) {
-        return executeTx(tx, null, self._api, promptCb, callback)
-      }
-
-      self._api.detectNetwork((err, network) => {
-        if (err) {
-          console.log(err)
-          return
-        }
-
-        confirmCb(network, tx, tx.gas, (gasPrice) => {
-          return executeTx(tx, gasPrice, self._api, promptCb, callback)
-        }, (error) => {
-          callback(error)
-        })
-      })
-    }, () => {
-      var blockGasLimit = executionContext.currentblockGasLimit()
-      // NOTE: estimateGas very likely will return a large limit if execution of the code failed
-      //       we want to be able to run the code in order to debug and find the cause for the failure
-      if (err) return callback(err)
-
-      var warnEstimation = ' An important gas estimation might also be the sign of a problem in the contract code. Please check loops and be sure you did not sent value to a non payable function (that\'s also the reason of strong gas estimation). '
-      warnEstimation += ' ' + err
-
-      if (gasEstimation > gasLimit) {
-        return callback('Gas required exceeds limit: ' + gasLimit + '. ' + warnEstimation)
-      }
-      if (gasEstimation > blockGasLimit) {
-        return callback('Gas required exceeds block gas limit: ' + gasLimit + '. ' + warnEstimation)
-      }
-    })
-  })
-}
-
-function tryTillResponse (txhash, done) {
-  executionContext.web3().eth.getTransactionReceipt(txhash, function (err, result) {
-    if (err || !result) {
-      // Try again with a bit of delay if error or if result still null
-      setTimeout(function () { tryTillResponse(txhash, done) }, 500)
-    } else {
-      done(err, {
-        result: result,
-        transactionHash: result.transactionHash
-      })
-    }
-  })
-}
-
-function sendTransaction (sendTx, tx, pass, callback) {
-  var cb = function (err, resp) {
-    if (err) {
-      return callback(err, resp)
-    }
-    tryTillResponse(resp, callback)
-  }
-  var args = pass !== null ? [tx, pass, cb] : [tx, cb]
-  try {
-    sendTx.apply({}, args)
-  } catch (e) {
-    return callback(`Send transaction failed: ${e.message} . if you use an injected provider, please check it is properly unlocked. `)
-  }
-}
-
-function run (self, tx, stamp, confirmationCb, gasEstimationForceSend, promptCb, callback) {
-  if (!self.runAsync && Object.keys(self.pendingTxs).length) {
-    self.queusTxs.push({ tx, stamp, callback })
-  } else {
-    self.pendingTxs[stamp] = tx
-    self.execute(tx, confirmationCb, gasEstimationForceSend, promptCb, (error, result) => {
-      delete self.pendingTxs[stamp]
-      callback(error, result)
-      if (self.queusTxs.length) {
-        var next = self.queusTxs.pop()
-        run(self, next.tx, next.stamp, next.callback)
-      }
-    })
-  }
-}
-
-module.exports = TxRunner
diff --git a/src/app/execution/typeConversion.js b/src/app/execution/typeConversion.js
deleted file mode 100644
index 1b5d879fc3..0000000000
--- a/src/app/execution/typeConversion.js
+++ /dev/null
@@ -1,42 +0,0 @@
-'use strict'
-var ethJSUtil = require('ethereumjs-util')
-var BN = ethJSUtil.BN
-
-module.exports = {
-  toInt: (h) => {
-    if (h.indexOf && h.indexOf('0x') === 0) {
-      return (new BN(h.replace('0x', ''), 16)).toString(10)
-    } else if (h.constructor && h.constructor.name === 'BigNumber' || BN.isBN(h)) {
-      return h.toString(10)
-    }
-    return h
-  },
-  stringify: stringify
-}
-
-function stringify (v) {
-  try {
-    if (v instanceof Array) {
-      var ret = []
-      for (var k in v) {
-        ret.push(stringify(v[k]))
-      }
-      return ret
-    } else if (BN.isBN(v) || (v.constructor && v.constructor.name === 'BigNumber')) {
-      return v.toString(10)
-    } else if (v._isBuffer) {
-      return ethJSUtil.bufferToHex(v)
-    } else if (typeof v === 'object') {
-      var retObject = {}
-      for (var i in v) {
-        retObject[i] = stringify(v[i])
-      }
-      return retObject
-    } else {
-      return v
-    }
-  } catch (e) {
-    console.log(e)
-    return v
-  }
-}
diff --git a/src/universal-dapp.js b/src/universal-dapp.js
index e61048f933..43d3f54504 100644
--- a/src/universal-dapp.js
+++ b/src/universal-dapp.js
@@ -8,7 +8,7 @@ var BN = ethJSUtil.BN
 var remixLib = require('remix-lib')
 var EventManager = remixLib.EventManager
 var crypto = require('crypto')
-var TxRunner = require('./app/execution/txRunner')
+var TxRunner = remixLib.execution.txRunner
 var txExecution = remixLib.execution.txExecution
 var txFormat = remixLib.execution.txFormat
 var txHelper = remixLib.execution.txHelper
@@ -17,7 +17,7 @@ var modalCustom = require('./app/ui/modal-dialog-custom')
 var uiUtil = require('./app/ui/util')
 
 var modalDialog = require('./app/ui/modaldialog')
-var typeConversion = require('./app/execution/typeConversion')
+var typeConversion = remixLib.execution.typeConversion
 var confirmDialog = require('./app/execution/confirmDialog')
 
 /*